Azure Key Vault (AKV) can be used to store all credentials for services that ADF will connect to. This has multiple advantages:

1. Security of storing sensitive information in credentials store
   which only the ADF service or Administrators can read from.

2. If credentials need to be rotated, ADF Linked Service is not
   required to be modified.

3. When we migrate the ADF pipeline from Dev to Test to Production
   no change is necessary.