Dynamics 365 CE And Azure Function - Part One

In a simple definition Azure function is a piece of code which can be executed on demand or can be bound to some event just like traditional SQL triggers, where we have some code that executes because of some event. The beauty of Azure function is its serverless capability which means you don’t need special infrastructure to host and manage it and you need to only pay when your function is executing.

source https://www.c-sharpcorner.com/article/dynamics-365-ce-and-azure-function-part-1/