The goal was to emulate what https://github.com/ojdkbuild/ojdkbuild started many years ago but take it alot further. Adopt will provide completely open transparent infrastructure as code (and infrastructure) for folks to build OpenJDK. We've got Red Hat, IBM, Oracle and SAP + various JUG's participating and I expect it'll become the common build farm for Java going forwards. People are also more than welcome to clone the whole thing and use it internally!