Expedited Retrieval in Glacier

Expedited — Expedited retrievals allow you to quickly access your data when occasional urgent requests for a subset of archives are required. For all but the largest archives (250 MB+), data accessed using Expedited retrievals are typically made available within 1–5 minutes. Provisioned Capacity ensures that retrieval capacity for Expedited retrievals is available when you need it.

https://docs.aws.amazon.com/amazonglacier/latest/dev/downloading-an-archive-two-steps.html