Looking for information on event managers who help executives become speakers at industry events

Hello all. Recently I’ve been trying to learn more about an events-related job that I’ve heard about. Does anyone have information to share about freelancers with events experience who are hired to submit executives from companies/startups/corporations to be speakers at big events - seems like it happens a lot in the tech industry. I’ve come across some former event planners who are hired by start ups or VCs or PR companies, and they will be paid a retainer to manage the process of trying to get the executives in to speak at big industry events such as Tech Chrunch, etc. What this career path is called, what it’s like etc.

Thanks much.

Bumping in case anyone has answers!