Short, honest write-ups of the ideas that come up in interviews and on the job. Each one teaches the concept properly, cites the Microsoft documentation, and points back to the class that drills it until it sticks.
Supabase vs Azure SQL free tier for a side project: they solve different problems. Supabase is an instant Postgres backend (DB, auth, storage, APIs); Azure SQL's free offering is a managed SQL Server database for the Microsoft stack. Here's how to pick — and what breaks when you outgrow either.
Choose the database your app needs, then check compute, storage, idle behavior, overage controls, and restore options. Free and paid entry plans belong in separate columns.
Both are fully managed, so the choice is not who patches the servers — it is the shape of your data and where in the world it needs to be. Relational depth, or global reach with a flexible schema.