DevOps

Learn the Docker commands developers use most often to build images, run containers, inspect applications, manage images, view logs, and clean up unused resources.

Already have a Node.js API and wondering whether it can run without a traditional server? Learn how to move a small API endpoint to AWS Lambda, expose it through API Gateway, handle environment variables, structure the handler, and avoid common serverless mistakes.

Learn how to build secure direct-to-S3 file uploads using presigned URLs. This practical tutorial shows how your backend can authorize an upload while the browser sends the file directly to Amazon S3.

Learn how AWS IAM works, how users, roles, and policies control access to AWS resources, and how developers can follow least-privilege practices when building cloud applications.

Compare blue-green and canary deployments to understand how modern teams release software safely, reduce deployment risk, and roll back changes when something goes wrong.

Understand the differences between Docker containers and virtual machines, including architecture, performance, isolation, resource usage, deployment, and when developers should choose each approach.