I wouldn’t be surprised if my current company - a third party AWS consulting company - wouldn’t just buy a laptop from Apple on their corporate account and tell me to pick it up from the local Apple Store and ship my old one back to the company.
That’s how I got my original one when I first started
Amazon - the first company I worked for remotely - had me use my own personal computer and log in to corporate approved internal AWS Workspace with the same software as they image their Windows computers until my Mac shipped. They would have done the same if I needed a replacement.
As far as installing drives, Thunderbolt is more than fast enough to use any external hard drive