AWS Classroomnotes 24/Apr/2022

Amazon EC2 Contd..

• Tenancy:
  • Shared:
    • This is default tenancy
    • The physical host is shared by multiple aws accounts
  • Dedicated:
    • The physical host is reserved for your account
      
      
• Dedicated hosts and Dedicated instances Refer Here
  
• For the Applications which are planned to run on AWS for the next 1 or 3 years, we can save a lot in terms of cost (up to 72% compared to On-Demand Instances)
  • Reservered Instances
  • Savings Plans
• Lets understand pricing with an example ec2 instance of 32 GB RAM Memory optimized (r6g.xlarge)
• Case: On-demand Instance
  
  
• Case: Reserved Instance
  
  
  
• Case: Savings Plan:
  • In Reservered Instances we give a commitment of a particular resource (like an ec2 instance with some type), where as in Savings plan we give longterm commitment (1 or 3 years) in terms of $/hour
• When we are using Reserved instances your ec2 instance will be charged whether it is running or stopped.
• Case: Spot Instances:
  • Here you can get discount upto 90%
• Note: This will be continued in next session…