Designing a Serverless Order System on AWS (Beyond CRUD)

Most applications start as simple CRUD systems - create, read, update, delete. But the moment you try to model something that reflects real-world operations, that simplicity disappears. I set out to build a basic ordering app, but somewhere along the way, I realised the real problem wasn't placing orders, it was handling what happens after. This is a breakdown of how that shift happened and how I designed it using a serverless architecture on AWS. At the beginning, the idea was straightforward.