If a venture studio provides a bunch of resources to help with marketing, gtm strategy, software development, finance, etc, do they have all of these people in-house? Or do they partner with other companies and agencies? Where do they get all their manpower from?

Curious venture studios work provide all this expertise.

(I realize quality varies widely and a lot of them probably don’t live up to their billing. I’m just asking about the logisitics of how they provide their service.)