Active, long-term, and physical storage.
Storage for table data that has been modified in the last 90 days. Data untouched for 90 consecutive days moves automatically to a long-term SKU at about half the price — no purchase, no configuration. Any write to a table resets that clock.
Billed: Per gibibyte-month of uncompressed data modified within the last 90 days. A companion long-term SKU covers the rest at roughly half the rate.