The problem is not technical, it's the immeasurable amounts of tiny personal fiefdoms established by the countless layers of middle management. You won't get rid of these without someone who has been publicly given the political backing to end the career of anyone resisting change. And that includes the Congress members which are on speed dial in some people's phones.
Even for military officers giving orders in the field, edicts don't work. You need buy-in, including earning trust in you.
https://chrislaing.net/blog/the-memo/
And now no one remembers what it was like without AWS...
IME such internal politics is unavoidable in large organizations. Nobody likes it but it's the ocean in which everyone must swim. You can alter it to some degree, but there's no way for a structure that large to work without it. How do you manage million(s?) of people without middle management?
Also, it's not Meta. It's an organization that is responsible for life and death of hundreds of millions or billions, and national and global security, so control is essential. As a simple example, you can't lose track of the grenade launchers or nuclear weapons and have them end up in the wrong hands.
Sure, you could assemble a team with that experience to short-cut some of that. But you'll likely need a long time to just build the trust necessary to get the right information. You're an outsider and will likely be treated as such.