Create a Cloud Function that triggers upon object addition to a bucket, checking file dates and moving them to Nearline storage if older than a week.

Create a Cloud Function that triggers upon object addition to a bucket, checking file dates and moving them to Coldline storage if older than a week.

Implement a lifecycle policy to transition objects older than a week to Coldline storage.

Implement a lifecycle policy to transition objects older than a week to Nearline storage.