Aws Lambda Functions

This gets you up and running with AWS Lambda through multiple deployment paths: raw AWS CLI commands, Terraform, and SAM templates. The reference guides cover the full lifecycle from creating IAM roles to packaging functions, plus practical patterns like Lambda Layers for sharing code across functions. Good mix of Node.js examples and infrastructure as code approaches. The quick start shows the manual IAM setup you'll need, which is honestly the part most tutorials skip. Best practices lean heavily on the operational side: cold starts, concurrency limits, and not burning money on oversized memory allocations. If you're choosing between deployment methods or need working examples of event sources and permissions, this covers the common paths.

skills.sh installs: 619
GitHub stars: 379
last updated: Aug 21, 2026

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Install

$ npx -y skills add aj-geddes/useful-ai-prompts --skill aws-lambda-functions --agent claude-code

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Overview

AWS Lambda enables you to run code without provisioning or managing servers. Build serverless applications using event-driven triggers, pay only for compute time consumed, and scale automatically with workload.

When to Use

API endpoints and webhooks
Scheduled batch jobs and data processing
Real-time file processing (S3 uploads)
Event-driven workflows (SNS, SQS)
Microservices and backend APIs
Data transformations and ETL jobs
IoT and sensor data processing
WebSocket connections

Quick Start

Minimal working example:

# Create Lambda execution role
aws iam create-role \
  --role-name lambda-execution-role \
  --assume-role-policy-document '{
    "Version": "2012-10-17",
    "Statement": [{
      "Effect": "Allow",
      "Principal": {"Service": "lambda.amazonaws.com"},
      "Action": "sts:AssumeRole"
    }]
  }'

SKILL.md on GitHub