Welcome to the MongoDB Community @Ayyadevara_Rajaram!
Your options will depend on the type of deployment you have (standalone, replica set, or sharded cluster) but assuming you are migrating a cluster between the same version of MongoDB in both cloud services, some common approaches are:
- Online migration using replication between self-managed clusters
- Live migration to MongoDB Atlas if you want to switch to a managed service
- Restore from a backup if downtime is acceptable
Most users want to avoid downtime and choose one of the first two approaches.
Regards,
Stennie