Same function at Apple. There isn't a separate "product" division and there aren't "PMs" with power (though there are some job site postings for them… in the marketing division.) That doesn't make sense at a functionally organized company where the execs and designers decide everything - Jobs and Ive were the "product" people.

IIRC the advertising people are called Marcom or "marketing communications".

Some companies run this as “inbound marketing” (collecting needs, understanding market size) versus “outbound marketing” (advertising, conferences).