What is a cliff?

Basically, none of your Units vest for the first 6 months. We think this is fair, because it takes about six months to get everything started and to make sure all the founders are committed to the project. After six months, you get all six months of vesting at once. If someone leaves before the first six months, they don’t leave with any Units. This saves you from losing Units to someone who’s not really up to the task!