- deletion of data Deletion of data from all external services that you use and internal services. If you have some processed data from internal data pipelines

- deletion of data Deletion of data from all external services that you use and internal services. If you have some processed data from internal data pipelines you will have to clear that as well. What about error reporting services? Internal logs? I think for data backups you can have it encrypted and that works as a good alternative but if you have to delete data from there it is not at all feasible. - store the data with best principles (i.e., instead of having ID and other stuff connected, centralize identifiying information and protect,use pseudonyms otherwise) Even if in the main data stores you store them in a well normalized way. It becomes a pain to do the same thing to do the same in data pipelines, sinks etc. If you are having a reporting DB it would make sense to denormalize data there.