I'm interested in learning how various publishing operations—large and small, academic and trade—handle the production process from after a manuscript is handed off from acquisitions till you send it to the printer or make a digital product available.

What parts of the process do you do in house, and what parts are handled by freelancers or vendors?  Do you review the work done by outside parties, and if so, do you review exhaustively or only sample the work to check for quality?

At what stages do you involve the author/editor?  Do any freelancers or vendors interact with authors/editors directly, or do you always mediate the communication?

Note that I have a morning flight and will arrive late to the planning session, but hopefully this gives you enough to go on.

Here's how we do things, as an example:
    
    https://docs.google.com/drawings/d/1kXHZf9yIu0CFE-AFxQ1oU9B_JVxg_lbSuNKAycUOUeg/edit?usp=sharing