[neeleshs]

IFTT, stitch and segment are some companies that try to solve this problem.

[TeMPOraL]

They're ultimately limited to which SaaS lets them, which is usually not much. For many, deep interoperability goes against the core objective of "engagement" (i.e. trapping the user in the service for as long as possible).

[brucephillips]

Interesting. What's an example of deep interoperability you'd to see that isn't currently available?