> Apps are a highly backend de-dup-able kind of data. AFAIK Apple's backup systems do not de-dup data. Backup data is encrypted and that key never touches the

> Apps are a highly backend de-dup-able kind of data. AFAIK Apple's backup systems do not de-dup data. Backup data is encrypted and that key never touches the data center. Instead, they: 1. de-dup data at the local application layer, such as sharing a common link to an image for photo albums along with the encryption key. 2. de-dup the environment by scripting the reinstallation from their controlled sources (stable CDN links to immutable/integrity protected packages with privilege-reduced installation)