But first things first, what the heck is serverless? Azure SQL Database serverless is a new compute tier made for single databases. This new model automatically scales the compute based on the actual workload per second. This means that you only have to pay for the compute resources (memory & vCores) you use. Furthermore, serverless has an autopause function. It will pause your database when it remains inactive for a period of minimum 1 hour. For a paused database, only the storage is charged.