Comment by jonstewart

Not corporate, but two of the best individual developer blogs are Eli Bendersky's and Rachel by the Bay. They've both been blogging prolifically for a decade+, Eli with a focus on, broadly, compilers and Rachel on SRE/debugging.

Raymond Chen's The Old New Thing is also required reading for anyone that works with Windows.

https://eli.thegreenplace.net/

https://rachelbythebay.com/w/

https://devblogs.microsoft.com/oldnewthing/