The Yield v2 App is available at https://app.yieldprotocol.com.
Using the Yield App, you can borrow or lend assets at a fixed rate for a fixed term. You may also use the Yield app to provide liquidity to earn fees from other users looking to borrow and lend.
At the core of Yield are user-owned vaults representing a collateralized debt position. Each vault is associated with single collateral and debt in a single series.
A series represents a single borrowable asset with a defined maturity date. Each series corresponds to a single ERC-20 fyToken. For example, Alice may own a vault with ETH collateral and debt in the September 25th, 2021 USDC series which represents an obligation to repay USDC on that date.