Serverless computing

See: Explain serverless computing

Functions in serverless computing

• single-purpose programmatic functions
• small pieces of code that do single things
• small piece of code that runs on demand (i.e. executed only when a server call is made)
• Encapsulates event-driven, server-like logic without a full-blown server
• Serverless functions can talk to databases, call third-party services, process user input and more

What is Azure functions?

• Azure Functions is a serverless compute option that supports functions
• Azure Functions allows you to run small pieces of code (called “functions”) without worrying about application infrastructure
• A serverless compute service that enables user to run event-triggered code without having to provision or manage infrastructure
• An event driven, compute-on-demand service in the Azure cloud
• Details: https://docs.microsoft.com/en-us/azure/azure-functions/functions-overview

Evolution of WebJobs - standalone and improved version of WebJobs

Why to use Azure functions?

• Low cost: pay-per-use pricing model
• Flexible development
• Choice of language (C#, Java, JavaScript, Python, and PowerShell.)
• Simplified integration
• Integrated security (Open ID Connect: Azure Active Directory, Facebook, Google, Twitter etc.)
• Stateful serverless architecture(Durable Functions)