I didn't know this and kept sharing links on my new page and it was banned from posting.I tried to look for support but just received responses from bots all the time and no human review until I gave up. I ended up starting another page.
As an engineer turned solo founder, I had to learn this the hard way. I used to think sales was only convincing people to buy your product, only to find out that it is actually listening and helping them to decide if your product solves their problem.
Splitting them round robin, or even in half, sounds horrible.
But maybe if you have 1 (one) backup domain like mydomain.net then you can host that on another vendor. But I'd rather just fail and focus on restoring at that point, you are still losing all traffic to the main domain, and contacting users with a secondary domain they've never heard off is a security posture nightmare and unprofessional.
In Uganda carrying two phones is completely normal. Many people have one for work and one for personal use, or simply because they can afford a second phone. Police wouldn't think twice about it.