Terms

• High Availability
• Fault Tolerant
• Redundant
• Service: What Cloud Services Provider offers ?
• Resource: Using Service what we create is Resource.

Global Infrastructure of AWS

• AWS identifies a geographical location which is referred as region.
• The infra is hosted on Availability Zones (AZ).
• Every Region is AWS has atleast 3 AZ’s
• Refer Here
  

Virtual Machines on AWS

• AWS allows us to create VMs by using a Service which is referred as EC2 (Elastic Compute Cloud) Refer Here
• EC2 Service has different Options for realizing your applications.

EC2 Options

• Choosing the Right VM Size for the right purpose
  • Instance Families and Instance Types
• Choosing the Right OS for your needs
  • Image => Amazon Machine Image
• Choosing the Right Block Storage
  • Block Storage => EBS (Elastic Block Storage)
• Choosing the network connectivity
  • Public and Private Network
  • Which AZ Ec2 instance should be running
• Choosing the right pricing model Refer Here
  • On-demand
  • Reservations
  • Spot Pricing