Enzyme has recently rebranded from Melon Protocol. The protocol has been on main-net since Feb 2019 and was the first DeFi protocol in history to decentralise it's governance. Enzyme v2 was launched to main-net in Jan 2021 and is a completely re-architected protocol with modularity and extensibility at the core of it's design.
1) enables access the MLN network
2) used to incentivise developers to build on Enzyme.