Transferring an existing domain name entails changing the domain name registrar that handles the domain registration service, so after the transfer, you’ll have to manage things like renewal fees or DNS record modifications through the new domain name registrar. The transfer process itself is standard with most domain extensions. Certain country-code extensions are more specific and entail different steps, but in the general case transferring a domain name involves several necessary steps and one of them is unlocking the domain. The lock is a security feature, which is being adopted by more and more domain registry organizations. It’s a default feature supported by all generic Top-Level Domains. If a domain is locked, it will not be possible to start a transfer procedure, so nobody can even attempt to take your domain. The lock can be removed 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 the moment they are registered.