1.what is AWS global infrastructure?
2.what is regions?
3.what is availability zone?
4.how many minimum and maximum AZ in one regions?
5.why are regions connected through cable?
1. What is AWS global infrastructure?
AWS global infrastructure = the physical & operational backbone that makes all AWS services run reliably, fast and securely world wide.
Its built in 3 layers: Regions --> Availability Zones --> Edge locations
2. what is regions?
The Main Building block and a geographical area with 1+ data centres. it is completely indepent from other regions. it has isolated power, network, security.
key rule: Data doesn't leave gthe region unless you choose.
eg: region name is Singapore and it code is ap-southeast-1
3. what is availability zone?
Physically separate data centres kilometers apart. each has its own independent power, cooling system, networks. DC is connected by low-latency, high speed, private links. If one AZs fails other keep running 99.99+ availability.
4. How many min and max AZ in one region?
min 3 AZs and Max 6AZs
5. Why regions are connected through cable?
They are only practical way to move massive amounts of data fast , reliably and affordably between regions. Satellites can't match them.
key reasons: unmatched and low latency, disaster recovery, reliability and redundancy, security.