What are tech companies that operate their own data centers? A few that I know of:
- Cloud providers: Alibaba, Amazon, Microsoft, Google, Oracle, IBM
- Apple (supposedly 10 DCs)
- Meta (supposedly 18 DCs)
- Twitter (used to be 3 DCs, aiming to go to 2)
- Uber (2 DCs)

What other ones do you know about?

@gergelyorosz isn't Apple using Google's cloud ?
@rednaks they are heavily on AWS. Might also use Google. And they def have large data centers as well, one of the biggest ones, globally!