AWS Lambda

Build serverless applications with AWS Lambda, covering function creation, event sources, layers, SAM templates, and cold start optimization.

When to Use This Skill

• Building event-driven applications triggered by API Gateway, S3, SQS, or EventBridge
• Running scheduled tasks (cron) without managing servers
• Processing data streams from Kinesis or DynamoDB
• Building lightweight APIs with API Gateway or function URLs
• Implementing webhooks, Slack bots, or automation scripts
• Reducing compute costs for intermittent or bursty workloads

Prerequisites

• AWS CLI v2 installed and configured
• Least-privilege IAM actions for the chosen resources; restrict iam:PassRole to the execution role. Wildcard service grants are not a prerequisite.
• Python 3.11+, Node.js 20+, or another supported runtime installed locally
• (Optional) AWS SAM CLI for local development and deployment