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Getting Started with AWS Cloud9 - Setting Up and Using a Browser-Based IDE

A cloud IDE that lets you complete AWS development entirely in the browser. Learn about Lambda development with a pre-installed SAM CLI environment and pair programming through real-time collaborative editing.

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Cloud9 Features and Use Cases

Cloud9 is a browser-based integrated development environment (IDE) that automatically provisions a development environment on an EC2 instance (around t3.small), running at just a few dollars per month. The code editor, terminal, and debugger all run within the browser, eliminating the need to install development tools on your local machine. AWS CLI, SAM CLI, Docker, Node.js, Python, and Git come pre-installed, so you can start developing without spending time on environment setup. It is especially useful for onboarding new team members, standardizing environments for hands-on workshops, and avoiding issues caused by differences in local environments.

Lambda Development and SAM CLI Integration

Cloud9 is optimized for Lambda function development, supporting local testing with up to 10 GB of /tmp storage and 15-minute timeouts. With SAM CLI pre-installed, you can create projects with sam init, run local tests with sam local invoke, and deploy with sam deploy, all from the terminal. It also supports inline debugging of Lambda functions, allowing you to set breakpoints and step through code. Since Docker is available, you can run API Gateway local emulation with sam local start-api. Because the Cloud9 environment runs on an EC2 instance, it can access VPC resources (RDS, ElastiCache) over the private network, making integration tests that are difficult in local development easy to run.

Cost Management and Security

Cloud9 itself is free to use; you only pay for the EC2 instance and EBS storage. The auto-stop feature automatically stops the EC2 instance after a period of inactivity and restarts it when you access it again. The default stop timer is 30 minutes, adjustable to suit your development style. With a t3.small instance used 8 hours per day, the monthly cost is just a few dollars. On the security side, AWS Managed Temporary Credentials are automatically injected into the environment, allowing access to AWS resources with the IAM user's permissions. There is no need to store access keys in files, reducing the risk of credential leaks. For more detailed coverage of Cloud9, you can also check related books on Amazon.

Summary

Cloud9 is a cloud IDE that lets you complete AWS development entirely in the browser. It provides pre-configured development tools, local Lambda function testing, and integrated AWS CLI operations from the terminal. Running on an EC2 instance, it supports real-time collaborative editing with team members, streamlining pair programming and code reviews.

Related Services

AWS Cloud9A cloud IDE service that lets you write, run, and debug code entirely from your browserAWS LambdaA serverless compute service that runs code without server managementAWS CodeCommitA secure, private Git repository hosting service provided by AWS

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