Unilever laid the muse for unconstrained capacity for business progress by migrating its SAP estate to Azure in only 18 months. Note: Create a file under /etcetera/apt/sources.checklist.d, not the /etc/apt/resources.checklist file where the distribution's official repository addresses are located. It is a approach that will not destabilize your system. https://cesarmsfrc.blogocial.com/what-does-whmcs-migration-mean-62597670