There is a LOT of things to cover here, this tool chain is just the tip of the iceberg. The EVM is open source on steroids - not only is the code open source but every cpu cycle, memory access and IO activity is executed in the open, and replayed across thousands of nodes by anyone, anywhere as a necessity.

This is probably one of the most exciting paradigm shifts in recent times, being able to call services / functions that are cryptographically verified is an incredibly powerful tool, and may one day become a standard part of the web stack. There is still a long way to go, but what a time to get involved!