What is internal deposit and withdrawal?

What is internal deposit and withdrawal?

To reduce the time and the cost of deposits and withdrawals, SynchroBit™ benefits from the technology enabling its users to transfer the funds between the SynchroBit™ wallets much faster, cheaper, and safer. Every user can transfer the funds from her account to another user just by choosing the Internal Transfer. Here instead of using the deposit wallet address, the user needs to put the receiver user’s “User ID”.