If yes, please respond with a description of what you do (with a rough estimate of how many freelancers you manage). I'm currently building a software catered to such agencies / SMEs, and I'd love to speak with you to get your opinion on it. Thank You
Yes. There is no such thing as a full-service agency. No agency could afford to employ all of the skills they may need when serving a client.
I once hired an animation studio to create a 3D stereoscopic mode of action video for a healthcare client. Never used them since but they were essential at the time and the best in the world at doing it.