Transferring an existing domain name entails changing the domain name registrar that provides the registration service, so after the transfer, you will have to manage things like renewal payments or DNS modifications through the new registrar company. The transfer procedure itself is standard with most generic and country-code domain extensions. Certain country-code extensions are more specific and entail different procedures, but in the general case transferring a domain entails a few basic procedures and one of them is unlocking the domain name. The lock is a security option, which is being embraced by more and more domain name registry organizations. It is a default feature supported by all gTLDs. If a domain is locked, it will be impossible to start a transfer procedure, so nobody can even attempt to steal your domain. The domain lock can be removed only through the account where the domain is registered and all new domains that support this option are locked by default when they are registered.