Why FastAPI and MongoDB?

You've learned Python the language, now let's build a real backend with it. FastAPI is a modern, high-performance Python web framework, and MongoDB is a NoSQL database that stores flexible, JSON-like documents instead of rigid rows and columns.

Why FastAPI

• Fast to write, path operations are plain Python functions with type hints.
• Automatic validation, request and response data is checked against the types you declare.
• Free interactive docs, every API automatically gets a Swagger UI page at /docs.
• Async-first, built to handle many concurrent requests efficiently.

Why MongoDB

A relational database (like the PostgreSQL you may have used with SQL) stores data in tables with a fixed set of columns. MongoDB stores documents, JSON-like objects that can have nested data and don't all need identical fields:

{
  "_id": "64f1b2c3d4e5f6",
  "title": "Buy groceries",
  "done": false,
  "tags": ["errands", "urgent"]
}