Domain Transfer
A domain transfer is the process of changing the designated registrar of a domain name. A domain transfer usually occurs for a variety of reasons, including: 1. Sale of a domain name from one party to another.
A domain transfer usually requires max 7 days for transfer in which period the domain should be active.
The domain does not face any downtime while in transfer process.
The losing regsistrar send email request for approval to the customer and after approval it gets transfered.