Compound was the one of the first DeFi lending protocols together with Aave. Compound is extremely well respected in the crypto community and known for their integrity, transparency and high security standards. The have been audited multiple times and the platform is battle tested.
In addition of receiving interest in the asset you supply you receive $COMP tokens when you supply assets to Compound. $COMP is the governance token of Compound and allows you to participate in the decision making process of the protocol.