Transferring an already registered domain entails changing the registrar company that handles the domain registration service, so after the transfer itself, you’ll have to manage things like renewal fees or DNS entry modifications through the new domain name registrar. The transfer process is standard with most domain name extensions. Some country-code extensions are more specific and involve different procedures, but in the general case transferring a domain entails a few basic steps and one of them is unlocking the domain. The lock is a security option, which is being adopted by more and more domain registry organizations. It’s a standard feature supported by all generic TLDs. If a domain is locked, it won’t be possible to start a transfer procedure, so no one can even try to register your domain. The lock can be removed only through the account where the domain name is registered and all new domains that support this feature are locked by default when they are registered.