Migrate from Gmail to G Suite (https://support.google.com/a/answer/6167866?hl=en&ref_topic=6351498)
Migration terms to know (https://support.google.com/a/answer/7001020)
Migrate email from one G Suite account to another (https://support.google.com/a/answer/6351475?hl=en)
Migrate from Exchange or Office 365 to G Suite (https://support.google.com/a/answer/180898?hl=en&ref_topic=6351498&visit_id=636878868873810593-3377032471&rd=1)
Migrate from other webmail providers to G Suite (https://support.google.com/a/answer/6351474?hl=en&ref_topic=6351498)
Transfer data between G Suite accounts (https://support.google.com/a/answer/1041297?hl=en)
Migrate contacts to G Suite (https://support.google.com/a/answer/6174025?hl=en)
Integrating Outlook and Exchange with G Suite (https://support.google.com/a/answer/33322?hl=en)
Administrator setup for GSMMO (https://support.google.com/a/answer/176213)
About synchronizing G Suite with Outlook (https://support.google.com/a/users/answer/153866?hl=en)