Serverless

Serverless is a cloud-native development model for building and running applications without managing servers. The cloud provider handles the routine work of provisioning, maintaining, and scaling the server infrastructure.

When to Use

• Event-Driven Workloads: Processing file uploads (S3), stream events (Kafka/Kinesis), and asynchronous queue workers.
• Variable & Spiky Traffic: Applications with unpredictable request volumes scaling automatically from 0 to thousands of instances.
• Low-Maintenance Web APIs: Deploying micro-APIs or webhook handlers without managing servers, operating systems, or patching.
• Scheduled Background Tasks: Running cron jobs, batch data transformations, and reporting tasks via EventBridge / CloudWatch.

Quick Start

// AWS Lambda Handler (Node.js)
export const handler = async (event) => {
  console.log("Event received:", JSON.stringify(event));

  const name = event.queryStringParameters?.name || "World";