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To perform a CORB check , given a request and response , run these steps:. One or two attributes that uniquely identify each item in a Amazon DynamoDB table, so that no two items can have the same key. Also known as an X. If there is a stale response a conditional request will be created, and a normal request otherwise. Archived from the original on June 17, A storage service optimized for media that provides the performance, consistency, and low latency required to deliver live and on-demand video content at scale. The administrator can create a profile for each network location type, with each profile containing different firewall policies.

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Web Hosting Our Website Hosting packages are optimised for security, stability and speed. Email Marketing Have a database of your target audience? Only computers on the local subnet of your network can connect to the program or port.

Only computers that have the IP addresses you list can connect. This can be a more secure setting than My network subnet only , however, client computers using DHCP can occasionally change their IP address.

Then the intended computer will not be able to connect. Another computer, which you had not intended to authorize, might accept the listed IP address and then be able to connect.

The Custom list option might be appropriate for listing other servers which are configured to use a fixed IP address; however, IP addresses might be spoofed by an intruder. Restricting firewall rules are only as strong as your network infrastructure. The snap-in includes a rule wizard and exposes additional settings that are not available in the Windows Firewall item in Control Panel.

These settings include the following:. On the Start menu, click Run , type WF. The effective port status is the union of all rules related to the port. When trying to block access through a port, it can be helpful to review all the rules which cite the port number. Review the ports that are active on the computer on which SQL Server is running. To verify which ports are listening, use the netstat command-line utility. In addition to displaying active TCP connections, the netstat utility also displays a variety of IP statistics and information.

The -n switch instructs netstat to numerically display the address and port number of active TCP connections. With a filtered status, the port might or might not be listening; this status indicates that the utility did not receive a response from the port. Service overview and network port requirements for the Windows Server system How to: The feedback system for this content will be changing soon. Old comments will not be carried over. If content within a comment thread is important to you, please save a copy.

For more information on the upcoming change, we invite you to read our blog post. Note This article provides an overview of firewall configuration and summarizes information of interest to a SQL Server administrator.

Note Turning on the firewall will affect other programs that access this computer, such as file and print sharing, and remote desktop connections. Note The feedback system for this content will be changing soon. This is the most common port allowed through the firewall. It applies to routine connections to the default installation of the Database Engine, or a named instance that is the only instance running on the computer.

Named instances have special considerations. See Dynamic Ports later in this article. See the discussion below in the section Dynamic Ports. TCP port for the default instance. Other ports are used for named instances. Check the error log for the port number. For more information, see Surface Area Configuration. The SQL Server Browser service listens for incoming connections to a named instance and provides the client the TCP port number that corresponds to that named instance.

The SQL Server Browser service does not have to be started if the client is configured to connect to the specific port of the named instance. Can be specified when an HTTP endpoint is created. To verify the port used, execute the following query: To determine the port, execute the following query: There is no default port for database mirroring however Books Online examples use TCP port or It is very important to avoid interrupting an in-use mirroring endpoint, especially in high-safety mode with automatic failover.

Your firewall configuration must avoid breaking quorum. File Sharing uses TCP port If using Management Studio, on the Management Studio host computer, you must also add ssms. Client connection requests for a named instance of Analysis Services that do not specify a port number are directed to port , the port on which SQL Server Browser listens.

SQL Server Browser then redirects the request to the port that the named instance uses. For more information, see the Interaction with Other Firewall Rules section below. The Service Control Manager uses port to perform tasks such as starting and stopping the Integration Services service and transmitting control requests to the running service.

The port number cannot be changed. This port is only required to be open if you are connecting to a remote instance of the Integration Services service from Management Studio or a custom application. The number of email messages, sent through Amazon SES , that were accepted by an internet service provider for delivery to recipient s over a period of time.

The result of a policy statement that includes deny as the effect, so that a specific action or actions are expressly forbidden for a user, group, or role. Explicit deny take precedence over explicit allow. A set of deployment rules and success and failure conditions used by the service during a deployment.

A set of individually tagged instance s, EC2 instance s in Auto Scaling group s, or both. A property added to parameters, resource s, resource properties, mappings, and outputs to help you to document AWS CloudFormation template elements.

A place where AWS users can post technical questions and feedback to help accelerate their development efforts and to engage with the AWS community. The discussion forums are located at https: A link between an origin server such as an Amazon S3 bucket and a domain name, which CloudFront automatically assigns. Through this link, CloudFront identifies the object you have stored in your origin server.

A standard that email senders use to sign their messages. ISPs use those signatures to verify that messages are legitimate. For more information, see http: A layered file system template that is the basis of a Docker container. Docker images can comprise specific operating systems or applications. An item that can be returned as a search result. Each document has a collection of fields that contain the data that can be searched or returned.

The value of a field can be either a string or a number. Each document must have a unique ID and at least one field. A collection of add and delete document operations. You use the document service API to submit batches to update the data in your search domain. The API call that you use to submit document batches to update the data in a search domain.

Each search domain has a unique document service endpoint that remains the same for the life of the domain. An Amazon ES domain is a service wrapper around an Elasticsearch cluster. An Amazon ES domain encapsulates the engine instances that process Amazon ES requests, the indexed data that you want to search, snapshots of the domain, access policies, and metadata. A service that routes internet traffic to websites by translating friendly domain names like www.

An ordered flow of information about changes to items in an Amazon DynamoDB table. When you enable a stream on a table, DynamoDB captures information about every modification to data items in the table. A compute instance in the Amazon EC2 service. Other AWS services use the term EC2 instance to distinguish these instances from other types of instances they support. A site that CloudFront uses to cache copies of your content for faster delivery to users at any location.

A company that provides open-source solutions—including Elasticsearch, Logstash, Kibana, and Beats—that are designed to take data from any source and search, analyze, and visualize it in real time. Elastic IP addresses are associated with your account, not a specific instance.

They are elastic because you can easily allocate, attach, detach, and free them as your needs change. Unlike traditional static IP addresses, Elastic IP addresses allow you to mask instance or Availability Zone failures by rapidly remapping your public IP addresses to another instance. A web service that improves an application's availability by distributing incoming traffic between two or more EC2 instance s.

An additional network interface that can be attached to an instance. You can create an elastic network interface, attach it to an instance, detach it from an instance, and attach it to another instance. An open source, real-time distributed search and analytics engine used for full-text search, structured search, and analytics.

Elasticsearch was developed by the Elastic company. To use a mathematical algorithm to make data unintelligible to unauthorized user s while allowing authorized users a method such as a key or password to convert the altered data back to its original state.

A URL that identifies a host and port as the entry point for a web service. Every web service request contains an endpoint. Most AWS products provide endpoints for a Region to enable faster connectivity. The DNS name of a cache node.

The port number used by a cache node. The port number used by a DB instance. The use of a master key and a data key to algorithmically protect data. The master key is used to encrypt and decrypt the data key and the data key is used to encrypt and decrypt the data itself. A specific running instance of an application. The application has a CNAME and includes an application version and a customizable configuration which is inherited from the default container type.

At the end of the deployment, the deployment group is made up of instances in the replacement environment. A collection of parameters and settings that define how an environment and its associated resources behave. The date from which time is measured. For most Unix environments, the epoch is January 1, The process of measuring the predictive performance of a machine learning ML model.

The data that Amazon Machine Learning uses to evaluate the predictive accuracy of a machine learning model. The method through which AWS products achieve high availability, which involves replicating data across multiple servers in Amazon's data centers.

When data is written or updated and Success is returned, all copies of the data are updated. The data will eventually be consistent, but an immediate read might not show the change. Consistency is usually reached within seconds.

A read process that returns data from only one region and might not show the most recent write information. However, if you repeat your read request after a short time, the response should eventually return the latest data.

The deletion by CloudFront of an object from an edge location before its expiration time. If an object in an edge location isn't frequently requested, CloudFront might evict the object remove the object before its expiration date to make room for objects that are more popular. For CloudFront caching, the time when CloudFront stops responding to user requests with an object.

If you don't use headers or CloudFront distribution settings to specify how long you want objects to stay in an edge location , the objects expire after 24 hours. The next time a user requests an object that has expired, CloudFront forwards the request to the origin.

A strategy that incrementally increases the wait between retry attempts in order to reduce the load on the system and increase the likelihood that repeated requests will succeed. For example, client applications might wait up to milliseconds before attempting the first retry, up to milliseconds before the second, up to milliseconds 6. A numeric expression that you can use to control how search hits are sorted.

You can construct Amazon CloudSearch expressions using numeric fields, other rank expressions, a document's default relevance score, and standard numeric operators and functions. When you use the sort option to specify an expression in a search request, the expression is evaluated for each search hit and the hits are listed according to their expression values.

A process that is used to integrate data from multiple sources. Data is collected from sources extract , converted to an appropriate format transform , and written to a target data store load for purposes of analysis and querying. ETL tools combine these three functions to consolidate and move data from one environment to another.

AWS Glue is a fully managed ETL service for discovering and organizing data, transforming it, and making it available for search and analytics. An index field that represents a category that you want to use to refine and filter search results.

An index field option that enables facet information to be calculated for the field. Also known as data transformation or feature engineering. Allows individuals to sign in to different networks or services, using the same group or personal credentials to access data across all networks.

The mechanism by which a mailbox provider for example, an internet service provider forwards a recipient 's complaint back to the sender. The relative importance of a text field in a search index. Field weights control how much matches in particular text fields affect a document's relevance score. A criterion that you specify to limit the results when you list or describe your Amazon EC2 resource s.

A way to filter search results without affecting how the results are scored and sorted. Specified with the Amazon CloudSearch fq parameter. A simple search query that uses approximate string matching fuzzy matching to correct for typographical errors and misspellings.

A search query that uses locations specified as a latitude and longitude to determine matches and sort the results. An index with a partition key and a sort key that can be different from those on the table. A global secondary index is considered global because queries on the index can span all of the data in a table, across all partitions. A type of identifier that allows the permissions in a grant to take effect immediately. The observations used in the machine learning ML model training process that include the correct value for the target attribute.

To train an ML model to predict house sales prices, the input observations would typically include prices of previous house sales in the area. The sale prices of these houses constitute the ground truth. A collection of IAM user s. You can use IAM groups to simplify specifying and managing permissions for multiple users.

Software that enables distributed processing for big data by using clusters and simple programming models. Email that recipients find valuable and want to receive. Value means different things to different recipients and can come in the form of offers, order confirmations, receipts, newsletters, etc.

Excerpts returned with search results that show where the search terms appear within the text of the matching documents. An index field option that enables matches within the field to be highlighted. A document that matches the criteria specified in a search request. Also referred to as a search result.

Hash-based Message Authentication Code. A specific construction for calculating a message authentication code MAC involving a cryptographic hash function in combination with a secret key. You can use it to verify both the data integrity and the authenticity of a message at the same time.

Like a traditional DNS zone file, a hosted zone represents a collection of records that are managed together under a single domain name. Hardware Virtual Machine virtualization. Allows the guest VM to run as though it is on a native hardware platform, except that it still uses paravirtual PV network and storage drivers for improved performance.

An IAM entity that holds metadata about external identity providers. A machine that uploads or downloads your data to or from Amazon S3.

A deployment method in which the application on each instance in the deployment group is stopped, the latest application revision is installed, and the new version of the application is started and validated.

You can choose to use a load balancer so each instance is deregistered during its deployment and then restored to service after the deployment is complete. A name—value pair that is included in an Amazon CloudSearch domain's index. An index field can contain text or numeric data, dates, or a location. Configuration settings that define an Amazon CloudSearch domain's index fields, how document data is mapped to those index fields, and how the index fields can be used.

The observations that you provide to Amazon Machine Learning to train and evaluate a machine learning model and generate predictions.

A general instance type grouping using either storage or CPU capacity. A Hadoop cluster contains one master instance group that contains one master node , a core instance group containing one or more core node and an optional task node instance group, which can contain any number of task nodes. Disk storage that is physically attached to the host computer for an EC2 instance , and therefore has the same lifespan as the instance.

When the instance is terminated, you lose any data in the instance store. A specification that defines the memory, CPU, storage capacity, and usage cost for an instance.

Some instance types are designed for standard applications, whereas others are designed for CPU-intensive, memory-intensive applications, and so on. Connects a network to the internet. A company that provides subscribers with access to the internet. Many ISPs are also mailbox provider s. Mailbox providers are sometimes referred to as ISPs, even if they only provide mailbox services. A special action in a AWS CloudFormation template that assigns values to properties not available until runtime.

These functions follow the format Fn:: Attribute , such as Fn:: Arguments for intrinsic functions can be parameters, pseudo parameters, or the output of other intrinsic functions. A numerical address for example, All EC2 instance s are assigned two IP addresses at launch, which are directly mapped to each other through network address translation NAT: An attribute that specifies the IP addresses or IP address ranges that web requests originate from.

The person who writes a policy to grant permissions to a resource. The issuer by definition is always the resource owner. If John is the resource owner, AWS authenticates John's identity when he submits the policy he's written to grant permissions for that resource. A group of attributes that is uniquely identifiable among all of the other items. Items in Amazon DynamoDB are similar in many ways to rows, records, or tuples in other database systems.

One or more step s that specify all of the functions to be performed on the data. A lightweight data interchange format. For information about JSON, see http: The location where email messages that various filters determine to be of lesser value are collected so that they do not arrive in the recipient 's inbox but are still accessible to the recipient.

This is also referred to as a spam or bulk folder. The unique identifier for an object in a bucket. Every object in a bucket has exactly one key. You can uniquely address every object in Amazon S3 through the combination of the web service endpoint, bucket name, and key, as in this example: The name of an object in Amazon S3.

It is a sequence of Unicode characters whose UTF-8 encoding cannot exceed bytes. In a policy , a specific characteristic that is the basis for restricting access such as the current time, or the IP address of the requester. A general tag label that acts like a category for more specific tag values. For example, you might have EC2 instance with the tag key of Owner and the tag value of Jan.

You can tag an AWS resource with up to 10 key—value pairs. Not all AWS resources can be tagged. A set of security credentials that you use to prove your identity electronically. A key pair consists of a private key and a public key. A logical grouping of the objects in a bucket. The prefix value is similar to a directory name that enables you to store similar data under the same directory in a bucket. A template that an Auto Scaling group uses to launch new EC2 instances.

The launch configuration contains information such as the Amazon Machine Image AMI ID, the instance type, key pairs, security group s, and block device mappings, among other configuration settings.

The lifecycle state of the EC2 instance contained in an Auto Scaling group. EC2 instances progress through several states over their lifespan; these include Pending , InService , Terminating and Terminated.

An action that can be paused by Auto Scaling, such as launching or terminating an EC2 instance. Enables you to pause Auto Scaling after it launches or terminates an EC2 instance so that you can perform a custom action while the instance is not in service. A DNS name combined with a set of ports, which together provide a destination for all requests intended for your application.

A load balancer can distribute traffic to multiple application instances across every Availability Zone within a Region. But load balancers cannot span multiple Regions.

An index that has the same partition key as the table, but a different sort key. A local secondary index is local in the sense that every partition of a local secondary index is scoped to a table partition that has the same partition key value.

A case-sensitive unique string within an AWS CloudFormation template that identifies a resource , mapping , parameter, or output. In an AWS CloudFormation template, each parameter, resource , property, mapping, and output must be declared with a unique logical name.

You use the logical name when dereferencing these items using the Ref function. Software that transports email messages from one computer to another by using a client-server architecture. An organization that provides email mailbox hosting services. Mailbox providers are sometimes referred to as internet service provider s, even if they only provide mailbox services. A set of email addresses that you can use to test an Amazon SES -based email sending application without sending messages to actual recipients.

Each email address represents a specific scenario such as a bounce or complaint and generates a typical response that is specific to the scenario. The default route table that any new VPC subnet uses for routing. You can associate a subnet with a different route table of your choice. You can also change which route table is the main route table. When sending a create job request for an import or export operation, you describe your job in a text file called a manifest.

The file used for describing batch predictions. The manifest file relates each input data file with its associated batch prediction results. It is stored in the Amazon S3 output location. You specify mappings in the template's optional Mappings section and retrieve the desired value using the FN:: The maximum price you will pay to launch one or more Spot Instance s.

If your maximum price exceeds the current Spot price and your restrictions are met, Amazon EC2 launches instances on your behalf.

The maximum number of email messages that you can send per second using Amazon SES. A unique identifier that is assigned to every email message that is sent.

The identifier returned when you send a message to a queue. Information about other data or objects. Users can also specify custom metadata at the time they store an object. In Amazon Elastic Compute Cloud Amazon EC2 metadata includes data about an EC2 instance that the instance can retrieve to determine things about itself, such as the instance type, the IP address, and so on. An element of time-series data defined by a unique combination of exactly one namespace , exactly one metric name, and between zero and ten dimensions.

Metrics and the statistics derived from them are the basis of Amazon CloudWatch. The primary identifier of a metric, used in combination with a namespace and optional dimensions. A type of EC2 instance that is more economical to use if you have occasional bursts of high CPU activity.

In machine learning ML , a mathematical model that generates predictions by finding patterns in data. Amazon Machine Learning supports three types of ML models: Also known as a predictive model.

A primary DB instance that has a synchronous standby replica in a different Availability Zone. The primary DB instance is synchronously replicated across Availability Zones to the standby replica. A machine learning model that predicts values that belong to a limited, pre-defined set of permissible values.

For example, "Is this product a book, movie, or clothing? An optional AWS account security feature. You get this single-use code from an authentication device that you keep in your physical possession. An internet standard that extends the email protocol to include non-ASCII text and nontext elements like attachments. A cascading application that provides a simple command-line interface for managing large datasets. An abstract container that provides context for the items names, or technical terms, or words it holds, and allows disambiguation of homonym items residing in different namespaces.

A strategy of mapping one or more IP addresses to another while data packets are in transit across a traffic routing device. This is commonly used to restrict internet communication to private instances while allowing outgoing traffic. A NAT device, managed by AWS, that performs network address translation in a private subnet , to secure inbound internet traffic.

A NAT device, configured by a user, that performs network address translation in a VPC public subnet to secure inbound internet traffic. An optional layer of security that acts as a firewall for controlling traffic in and out of a subnet. You can associate multiple subnets with a single network ACL , but a subnet can be associated with only one network ACL at a time. A transformation that aids in text string analysis. An n-gram transformation takes a text variable as input and outputs strings by sliding a window of size n words, where n is specified by the user, over the text, and outputting every string of words of size n and all smaller sizes.

A node can be either a data instance or a dedicated master instance. A property of AWS CloudFormation parameters that prevent the otherwise default reporting of names and values of a template parameter.

Declaring the NoEcho property causes the parameter value to be masked with asterisks in the report by the cfn-describe-stacks command.

Nonrelational database systems that are highly available, scalable, and optimized for high performance. Instead of the relational model, NoSQL databases like Amazon DynamoDB use alternate models for data management, such as key—value pairs or document storage. A null object is one whose version ID is null. Amazon S3 adds a null object to a bucket when versioning for that bucket is suspended. It is possible to have only one null object for each key in a bucket.

The number of times that you allow Amazon Machine Learning to use the same data records to train a machine learning model. The fundamental entity type stored in Amazon S3. Objects consist of object data and metadata.

The data portion is opaque to Amazon S3. A single instance of data that Amazon Machine Learning Amazon ML uses to either train a machine learning model how to predict or to generate a prediction. Each row in an Amazon ML input data file is an observation. An Amazon EC2 pricing option that charges you for compute capacity by the hour with no long-term commitment.

A strategy to ensure that an item that you want to update has not been modified by others before you perform the update. An entity that you create to consolidate and manage your AWS accounts. An organization has one master account along with zero or more member accounts. A container for accounts within a root of an organization. An organizational unit OU can contain other OUs. Usually used with CloudFront private content.

The Amazon S3 bucket or custom origin containing the definitive original version of the content you deliver through CloudFront. Orthogonal sparse bigram transformation. In machine learning, a transformation that aids in text string analysis and that is an alternative to the n-gram transformation. OSB transformations are generated by sliding the window of size n words over the text, and outputting every pair of words that includes the first word in the window. An Amazon S3 location where the results of a batch prediction are stored.

The process of responding to an API request by returning a large list of records in small separate parts. Pagination can occur in the following situations:. The client sets the maximum number of returned records to a value below the total number of records. The service has a default maximum number of returned records that is lower than the total number of records. When an API response is paginated, the service sends a subset of the large list of records and a pagination token that indicates that more records are available.

The client includes this pagination token in a subsequent API request, and the service responds with the next subset of records. This continues until the service responds with a subset of records and no pagination token, indicating that all records have been sent.

A marker that indicates that an API response contains a subset of a larger list of records. The client can return this marker in a subsequent API request to retrieve the next subset of records until the service responds with a subset of records and no pagination token, indicating that all records have been sent. A statement within a policy that allows or denies access to a particular resource. You can state any permission like this: Whenever Jane sends a request to Amazon SQS to use John's queue, the service checks to see if she has permission and if the request satisfies the conditions John set forth in the permission.

A data storage solution where the data remains intact until it is deleted. Options within AWS include: Some AWS CloudFormation commands accept the physical name as a value with the --physical-name parameter. A workflow construct that defines the way software changes go through a release process. Information that has not been encrypted , as opposed to ciphertext. A document defining permissions that apply to a user, group, or role; the permissions in turn determine what users can do in AWS.

A policy typically allow s access to specific actions, and can optionally grant that the actions are allowed for specific resource s, like EC2 instance s, Amazon S3 bucket s, and so on.

Policies can also explicitly deny access. An object that stores the information needed to launch or terminate instances for an Auto Scaling group. Executing the policy causes instances to be launched or terminated. You can configure an alarm to invoke an Auto Scaling policy. A web address that uses query string authentication. A one-on-one, fast-response support channel that AWS customers can subscribe to for support for AWS infrastructure services. One or two attributes that uniquely identify each item in a Amazon DynamoDB table, so that no two items can have the same key.

The user , service, or account that receives permissions that are defined in a policy. The principal is A in the statement "A has permission to do B to C. When using Amazon CloudFront to serve content with an Amazon S3 bucket as the origin, a method of controlling access to your content by requiring users to use signed URLs. A private numerical address for example, A VPC subnet whose instances cannot be reached from the internet. A predefined setting, such as AWS: You can use pseudo parameters anywhere you can use a regular parameter.

A large collection of public information that can be seamlessly integrated into AWS cloud-based applications. Amazon stores public data sets at no charge to the community and, like all AWS services, users pay only for the compute and storage they use for their own applications. These data sets currently include data from the Human Genome Project, the U. Census, Wikipedia, and other sources.

A pubic numerical address for example, Allows guest VMs to run on host systems that do not have special support extensions for full hardware and CPU virtualization. Because PV guests run a modified operating system that does not use hardware emulation, they cannot provide hardware-related features such as enhanced networking or GPU support.

A process that takes two inputs, a numerical variable and a parameter called a bin number, and outputs a categorical variable. A sequence of messages or jobs that are held in temporary storage awaiting transmission or processing. The maximum number of DB instance s and available storage you can use. The maximum number of the following items:. A request that specifies a byte range of data to get for a download.

If an object is large, you can break up a download into smaller units by sending multiple range GET requests that each specify a different byte range to GET. An active copy of another DB instance. An identifier that you get when you receive a message from the queue. This identifier is required to delete a message from the queue or when changing a message's visibility timeout. The entity that consists of the network systems, software, and policies that manage email delivery for a recipient.

The person or entity receiving an email message. For example, a person named in the "To" field of a message. A fast, open source, in-memory key-value data structure store. Redis comes with a set of versatile in-memory data structures with which you can easily create a variety of custom applications.

A means of inserting a property from one AWS resource into another. A named set of AWS resource s in the same geographical area. A Region comprises at least two Availability Zone s. Preformatted instructions for common data transformations that fine-tune machine learning model performance.

A type of machine learning model that predicts a numeric value, such as the exact purchase price of a house. A machine learning ML parameter that you can tune to obtain higher-quality ML models.

Regularization helps prevent ML models from memorizing training data examples instead of learning how to generalize the patterns it sees called overfitting.

When training data is overfitted, the ML model performs well on the training data but does not perform well on the evaluation data or on new data. The email address to which an email reply is sent. This is different from the return path. An Amazon SES metric, based on factors that might include bounce s, complaint s, and other metrics, regarding whether or not a customer is sending high-quality email.

A measure of confidence, as judged by an internet service provider or other entity that an IP address that they are receiving email from is not the source of spam. The person or application that sends a request to AWS to perform a specific action. When AWS receives a request, it first evaluates the requester's permissions to determine whether the requester is allowed to perform the request action if applicable, for the requested resource.

An Amazon S3 feature that allows a bucket owner to specify that anyone who requests access to objects in a particular bucket must pay the data transfer and request costs. A collection of EC2 instance s started as part of the same launch request. Not to be confused with a Reserved Instance. A pricing option for EC2 instance s that discounts the on-demand usage charge for instances that meet the specified parameters.

Customers pay for the entire term of the instance, regardless of how they use it. An online exchange that matches sellers who have reserved capacity that they no longer need with buyers who are looking to purchase additional capacity.

Reserved Instance s that you purchase from third-party sellers have less than a full standard term remaining and can be sold at different upfront prices. The usage or reoccurring fees remain the same as the fees set when the Reserved Instances were originally purchased. Each resource may have one or more properties associated with it.

For example, an AWS::

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