AWS Serverless: Lambda, API Gateway, Step Functions, and EventBridge

<p>Follow Tomas Reyes, a backend engineer at Meridian Tickets, as a seat-reservation service that used to fall over during flash ticket sales gets rebuilt from the ground up as serverless. A single Lambda function goes from CLI test to production with a locked-down IAM role, then gets fronted by two API Gateway endpoints — one fast and cheap for the browser, one metered and key-gated for a reseller partner. A Step Functions state machine carries every order through payment, confirmation, and email with retries and automatic compensation when a charge fails, and EventBridge lets loyalty, marketing, and analytics react to a completed order — and a scheduled rule reclaim abandoned seat holds — without any of them being wired directly into the code that actually sells the ticket.</p>

Tools: aws lambda, api gateway, step functions, eventbridge