The product has been extremely successful because it's more usable.

We've been extremely successful. There's just much more to do.

A successful product may not be scalable; a successful process always is

Chess was natural for me; I was extremely successful.

We are your ambassadors in a sense, and it was an extremely successful trip.

the Office 12 formats pay special attention to compatibility with older document versions, [and] other formats do not concern themselves with this important issue.