Most companies keep everything, because deleting is a decision and keeping is not. It helps to know what you are required to keep, for how long, and what you keep out of habit.
These are the usual general obligations, a starting point for your accountant or solicitor, not advice; your industry may impose longer ones.
In most archives the records you are obliged to keep are a small fraction of the volume. The rest is working material: drafts, exports, renders, versions of the same deliverable. It stays because deleting it needs somebody to take responsibility for it.
The cost of keeping it is invisible until the tenant fills up.
Records you must keep and are unlikely to open are the clearest case for an archive. They do not belong in the system your team works in every day, at the quota you pay a premium for, and they do not belong in a frozen tier where getting one back takes a day and a support ticket.
Shed holds them at half what Microsoft charges for extra storage, searchable by name and inside documents, snapshotted nightly and copied a second time. When somebody needs the invoice from 2019, it opens in a browser.
Talk to us about what you are keeping, or read the difference between archive, backup and cold storage.