Publishers offering "Session Sponsorship" spots

A session sponsorship puts a brand's name on one talk, panel or workshop at an event, with a logo on the screen and a mention from the host. Inman, The A.V. Club and Frankwatching sell versions of it.

How it's sold: The event organiser's sales team books it, and the deal normally includes a host mention and branding at the venue.
Typical price: A flat fee per session or per event is the usual basis, quoted on request.
What you supply: A logo, a sponsor line, and slides or a short video if the publisher allows one.
Best for: Putting a name in front of a professional audience around a topic the brand cares about.
Before you buy: Typical attendance at that session, and whether the sponsor gets their contact details.