Masternode
From Organic Design wiki
Masternodes
In addition to a normal blockchain secured by mining nodes, Dash also has a network of servers to facilitate mixing and fast transactions. The servers run the dashd daemon and each one needs 1000 DASH of collateral. Interest is received for running the service. This is particularly attractive because the collateral can remain under full control of the user and doesn't need to be on the same server as the dashd' service is running one. This means you can use third-party hosted services such as masternode.me too with no risk of losing your collateral.