Depends on the nature of the service, the range goes from something that could be served globally from a single box to basically reselling an upstream cloud provider.

But gp was talking about hiring persons, not servers. Advertising can be scaled back much easier than over-hiring. Even if almost everybody is fired again, the inefficiencies that established themselves during the headcount glut can usually not be unlearned again.

or PR. Good PR people are insanely expensive.