AWS Elastic Beanstalk is a managed deployment service for web applications. You provide application code or, in its container-based Cluster mode, a container image or source to build into one; Elastic Beanstalk provisions and manages the environment that runs it. It automates parts of deployment, scaling, load balancing, and health monitoring, while your AWS bill still includes the underlying resources your application uses.
What AWS Elastic Beanstalk does
Elastic Beanstalk provides a managed way to deploy and operate an application in AWS without manually configuring every infrastructure component. You create an application, supply a deployable version, and configure an environment. Elastic Beanstalk then provisions and configures resources for that environment and deploys the application. You retain access to the AWS resources and can manage environments through the AWS console and command-line tools. AWS’s service overview describes the service and its management features.
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It is not a single runtime or a serverless execution model. The application runs on infrastructure: either EC2 instances in Standard mode or containers on an EKS cluster in Cluster mode. Which resources are created depends on the mode and configuration.
Standard and Cluster modes: what is the difference?
| Comparison | Standard | Cluster |
|---|---|---|
| Where the application runs | Directly on Amazon EC2. | As containers on an Amazon EKS cluster that Elastic Beanstalk creates and operates. |
| What you provide | A supported managed platform application or a Docker application. | A container image or source that Elastic Beanstalk builds into an image. |
| Workload options | Web-server environments serve requests; worker environments can process tasks from an SQS queue. | Containerized application replicas. |
| Useful when | You want a managed EC2-based deployment, including supported platform choices. | You want container orchestration and the Cluster capabilities AWS describes. |
| Charges | Charges for the AWS resources used by the environment. | Charges for the AWS resources used; check current AWS pricing for the Cluster architecture. |
Standard: managed platforms on EC2
In Standard mode, Elastic Beanstalk runs the application directly on EC2. AWS lists platform families including Go, Java, .NET, Node.js, PHP, Python, Ruby, and Docker. The platform and its available versions can change, so check AWS’s current supported-platform documentation when choosing one. Elastic Beanstalk provisions EC2 and related resources, configures load balancing and capacity scaling, applies platform updates, and reports environment health. Standard offers web-server and worker environment tiers; a worker can handle background tasks from SQS. See AWS’s Standard-mode documentation.
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Cluster: containers on EKS
In Cluster mode, Elastic Beanstalk creates and operates an EKS cluster for the application. You supply an image or source that the service builds into an image; unlike Standard, there is no Elastic Beanstalk platform-selection step. AWS lists rolling updates, replica scaling, and environment-health reporting. AWS says Cluster may provide “faster deployments, faster autoscaling, improved resource utilization when running multiple environments, and managed OpenTelemetry integration.” Those are AWS’s stated benefits, not a guarantee of a particular result for every workload. Review AWS’s Cluster-mode documentation and verify the current infrastructure and pricing before adopting it.
How an Elastic Beanstalk deployment works
- Create an application. This is the logical grouping for related application components.
- Provide an application version. Upload or point Elastic Beanstalk to deployable code. AWS defines an application version as a labeled iteration of code that points to an object in Amazon S3.
- Configure an environment. Select the applicable mode and workload tier, then set the environment’s options.
- Launch or update the environment. Elastic Beanstalk provisions and configures resources, then deploys the selected application version.
- Monitor and maintain it. Use environment health, events, metrics, and logs to track operation; change configuration or deploy another version when needed.
AWS’s getting-started guide illustrates a Standard environment that creates an EC2 instance, instance security group, S3 bucket for source code, logs, and artifacts, CloudWatch alarms, a CloudFormation stack, and an Elastic Beanstalk domain name. That list describes the tutorial example, not a fixed inventory for every environment; Cluster provisions a different set of resources.
For terminology such as application versions, environment configuration, and tiers, consult AWS’s Elastic Beanstalk concepts guide.
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When Elastic Beanstalk is a good fit
Elastic Beanstalk is relevant when you want AWS to automate much of the environment setup and deployment work for a web application or service, while retaining access to the underlying AWS resources. AWS’s deployment-options guidance presents it as a way to reduce infrastructure-management effort for web applications; that is product guidance, not an independent performance comparison. AWS deployment-options whitepaper
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- Choose Standard when the application fits a supported EC2 platform or Docker deployment, or when you need a Standard worker environment to process SQS tasks.
- Consider Cluster when the application is containerized and you want the EKS-based orchestration model and capabilities AWS attributes to it.
- Look beyond Elastic Beanstalk if your main requirement is a different deployment or operations model. The choice should follow the application’s runtime, architecture, and management needs rather than the service name alone.
How Elastic Beanstalk pricing works
AWS states: “There is no additional charge for Elastic Beanstalk.” That means the service itself has no separate fee according to AWS; it does not mean that running an environment is free. You pay for the AWS resources your application consumes. AWS service overview
The resulting bill depends on the resources and configuration you select, including compute and, where used, load balancing and storage, as well as workload and region. There is no single monthly price that applies to every Elastic Beanstalk deployment. Use AWS pricing tools to estimate the specific architecture and check current regional rates before launching it. AWS also warns that resources created by its getting-started tutorial incur standard AWS fees until deleted.
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