Microsoft is promoting / providing courses on all sort of languages and technologies and so are other cloud providers. It is good to know but it sure is not like "Rust on Microsoft site? This changes everything!!" E.g. here are course for Go [1], for Java[2]

1. https://docs.microsoft.com/en-us/learn/paths/go-first-steps/ 2. https://docs.microsoft.com/en-us/learn/paths/java-on-azure/