Building New Things and Extending Existing Things

There's lots of brand new pieces of code to write following which he said. Because there's a lot of problems you need to solve this effectively. You need an efficient way of representing messages on the wire and nice APIs for interacting with those messages. There's also other interesting technical challenges around having the specification language of how messages work. And at the same time, you also want to take this thing and then integrate it into real live existing software code bases.