Migration of existing DLs and DDLs to M365 Groups

Hello Everyone,

We are currently having all our DLs and DDLs in Exchange Online, all users in our org have E5 license. We are planning to move all DLs and DDLs to M365 groups to change for better approach for communication.

Can someone help me where I can find the step by step guidance for it?

My main task is to identify what can broken by doing this migration?