Azure Functions vs Fission: What are the differences?
What is Azure Functions? Listen and react to events across your stack. Azure Functions is an event driven, compute-on-demand experience that extends the existing Azure application platform with capabilities to implement code triggered by events occurring in virtually any Azure or 3rd party service as well as on-premises systems.
What is Fission? Serverless Functions as a Service for Kubernetes. Write short-lived functions in any language, and map them to HTTP requests (or other event triggers). Deploy functions instantly with one command. There are no containers to build, and no Docker registries to manage.
Azure Functions and Fission can be primarily classified as "Serverless / Task Processing" tools.
Fission is an open source tool with 4.46K GitHub stars and 399 GitHub forks. Here's a link to Fission's open source repository on GitHub.