FaaS is a platform for building serverless functions on Docker Swarm Mode with first class metrics. Any UNIX process can be packaged as a function in FaaS enabling you to consume a range of web events without repetitive boiler-plate coding.
FaaS is a tool in the Serverless / Task Processing category of a tech stack.
FaaS is an open source tool with 14K Github Stars and 1.1K Github Forks. Here’s a link to FaaS's open source repository on Github
Here’s a list of reasons why companies and developers use FaaS.