The vesting schedule at AMZN is 5% after 12 months, 15% in 24 months, and 20% for every 6 months thereafter. For me (SDE I), that works out to $2200 in year 1 and a projected $7000ish in year 2. MSFT, on the other hand, has their stock vests 25% after 12 months and 25% for every 12 thereafter.