Six Advantages of cloud computing
a. trade captial expense for variable expens
b. beneift from massive economies of scale
c. stop guessing about capacity
d. increase speed and agility
e. stop spending money running and maintaining data centers
f. go global in minutes.
- Types of Cloud computing
- Global Infrastructure
2018.1.12日， AWS 云在中外 18 个地理区域内运营着 49
GovCloud 区域那七个地区，同时再追加 12 个可用区。（超越190个国家）
- Security and Compliance
The AWS Cloud enables a shared responsibility model.
Benefits of AWS Security: Keep your data safe,
aws提供高安全性数据要旨。Meet Compliance requirements。 Save
国家地理，EC2 SLA 99.95%
EC2 Dedicated instances和Dedicated Hosts 区别
When you launch a Dedicated Instance, we can’t use the remaining
“slots” on the hardware to run instances for other AWS users. Therefore,
we incur an opportunity cost when you launch a single Dedicated
Instance. Put another way, if you run one Dedicated Instance on a
machine that can support 10 instances, 9/10ths of the potential revenue
from that machine is lost to us.
In order to keep things simple (and to keep you from wasting your
time trying to figure out how many instances can run on a single piece
of hardware), we add a $10/hour charge whenever you have at least one
Dedicated Instance running in a Region. When figured as a per-instance
cost, this charge will asymptotically approach $0 (per instance) for
customers that run hundreds or thousands of instances in a Region.