The subtleties of data sovereignty by Andrew White via @infomgmt

Determining sovereignty includes where the data was formed, where it is stored, and where an inquiry is being undertaken from, says Andrew White.

This is an absolute minefield.  Having worked for a global company which has it's headquarters and data centre in the US, but working in an office in the UK I can understand some of the subtleties of the various rules and regulations. It's not even just about the sovereignty - it's also other areas around it too like different legal requirements for data retention and the different levels of privacy for different countries/regions too.