There is no way you can actually delete anything in the cloud, because once it is in the cloud, it is not under your control anymore.
The ability to "delete" something is only apparent. You can just tell the customer you have erased her data, but preserve it anyway, not to mention other parties like secret services or competitors, that could be interested on your data too.
If you have valuable data, people(like the Chinese or competitors) will offer your workers millions of dollars(or just threaten them or you like 3 letter agencies) for access to this data.
The ability to "delete" something is only apparent. You can just tell the customer you have erased her data, but preserve it anyway, not to mention other parties like secret services or competitors, that could be interested on your data too.
If you have valuable data, people(like the Chinese or competitors) will offer your workers millions of dollars(or just threaten them or you like 3 letter agencies) for access to this data.