Functions as a Service has taken the API development world by storm, by using containers to isolate bits of functionality comprising a web service from one another.
This has made securing code a lot easier, because when each bit of code only interacts with one API, it only needs one API key.
PureFaas takes it further by removing the API key from the container with the custom code, and putting the API key in a gateway container.
This is based on the concept of pure functions.
Internet access is then removed from the function with the custom code, and it can only use the gateway container to send and receive requests according to the rules.
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