Transferring an existing domain name involves changing the domain name registrar that handles the domain registration service, so after the transfer itself, you will have to manage things like renewal fees or DNS entry modifications through the new registrar. The transfer process is standard with most gTLD and ccTLD extensions. Some country-code extensions are more specific and involve different steps, but in the general case transferring a domain entails several necessary steps and one of them is unlocking the domain. The domain lock is a security feature, which is being adopted by more and more domain name registry operators. It is a default feature supported by all generic TLDs. If a domain is locked, it will be impossible to initiate a transfer procedure, so no one can even attempt to snatch your domain. The lock can be annulled only through the account where the domain is registered in the first place and all new domains that support this feature are locked by default when they are registered.