應該是各項成本的降低的順勢降價,幅度約 5%:「Happy New Year – EC2 Price Reduction (C4, M4, and R3 Instances)」。
C4 與 R3 是針對 CPU 與記憶體,M4 則是一般性的 instance,都是最新的系列。看起來是累積到過年後發一篇用的?價錢馬上生效,同時 On-Demand 的部份回朔到月初:
Changes to the On-Demand and Dedicated host pricing are retroactive to the beginning of the month (January 1, 2016); the new Reserved instance pricing is in effect today. During the month, your billing estimates may not reflect the reduced prices. They will be reflected in the statement at the end of the month.
接下來應該是陸陸續續恢復正常上班...