Transferring an active domain entails changing the registrar company 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 Top-Level Domain extensions. Some country-code extensions are more specific and involve different procedures, but in the general case transferring a domain involves a few basic steps and one of them is unlocking the domain. The lock is a security feature, which is being adopted by more and more registry organizations. It is a default feature supported by all generic top-level domain names. If a domain name is locked, it will be impossible to start a transfer process, so nobody can even try to register your domain. The domain lock can be removed only through the account where the domain is registered in the first place and all new domain names that support this functionality are locked by default the moment they are registered.