The Azure Hybrid Benefit for Linux allows you to bring your existing Red Hat Enterprise Linux (RHEL) or SUSE Linux Enterprise Server (SLES) subscriptions to Azure, so that you only pay for the infrastructure costs of the VM on Azure.

If you don’t know much about how this benefit gets activated for Linux VMs then we’d recommend this splendid interactive demo from Microsoft: https://bit.ly/3JBNUwU.