This second OSO Symposium will build on our first gathering in June 2019 of community members involved in all levels of the observation-to-information value chain, from data providers to users, of operational satellite oceanographic data, products and applications. This second symposium will cut across several value chain levels with specific focus themes around which we can evaluate progress. Additionally, the programme committee anticipates that submitted abstracts will touch on at least one, and as many as possible, of the cross-cutting topics identified below to be of particular and timely interest.