Transferring an existing domain entails changing the registrar that provides the domain registration service, so after the transfer, you’ll have to manage things like renewal payments or DNS resource record updates through the new registrar. The transfer procedure itself is standard with most generic and country-code domain name extensions. Some country-code extensions are more specific and entail different steps, but in the general case transferring a domain name entails a few necessary steps and one of them is unlocking the domain name. The lock is a security feature, which is being embraced by more and more domain name registry operators. It is a standard feature supported by all generic Top-Level Domains. If a domain name is locked, it will be impossible to start a transfer procedure, so no one can even try to steal your domain name. The domain lock can be removed only through the account where the domain is registered in the first place and all new domains that support this functionality are locked by default when they are registered.