Justin Bingham of Inrupt and admin of Solid forum recently posted some info on the draft specification for Solid Application Interoperability.
They represent Solid’s perspective on interoperability. Summarising from problems & goals for this specification:
1 - Seamless data interoperability across disparate applications
2- Use intuitive data boundaries to provide human to machine interoperability
3 - Secure collaboration over intuitive data boundaries
4 - Standard and flexible organizing model for data
5 - Flexibility and support for different and evolving query mechanisms
6 - Optimize and extend, but do not change Solid fundamentals