Reserved Instances

Reserved Instances

• Up to 72% discount compared to On-demand

• You reserve a specific instance attributes (Instance Type, Region, Tenancy, OS)

• Reservation Period – 1 year (+discount) or 3 years (+++discount)

• Payment Options – No Upfront (+), Partial Upfront (++), All Upfront (+++)

• Reserved Instance’s Scope – Regional or Zonal (reserve capacity in an AZ)

• Recommended for steady-state usage applications (think database)

• You can buy and sell in the Reserved Instance Marketplace

Convertible Reserved Instance

• Can change the EC2 instance type, instance family, OS, scope, and tenancy

• Up to 66% discount

Note

The % discounts are different as AWS change them over time – the exact numbers are not needed for the exam. This is just for illustrative purposes