Transferring a domain

Recently I transferred a domain from one provider to another (Server4You) and found it to be very fast and simple. After canceling the contract with the old provider it provided an AuthInfo Code that I had to give to the new provider (I had to enter it on their website). Afterward the transfer was automatically performed in less than two hours without any interruption. I had already set the new IP for that domain when using the old provider so the IP stayed the same during the transfer.