Amazon Web Services
From Leo's Notes
This page was last edited on 13 September 2019, at 02:12.
Some notes on Amazon Web Services (AWS)
Pricing
There are 4 models for Amazon Elastic Compute (EC2):
- On-Demand Instances
- Pay per hour or per second
- Reserved
- Discounted up to 75% compared to On-Demand but must commit to a 1 or 3 year term
- Spot Instances
- Request spare computing capacity by making a bid and having it fulfilled when the price drops below your bid
- Dedicated Hosts
There are many different instance types. The 12 month free eligible type is t2.micro which comes with 1 vCPU, 1GB RAM. The value of this VM is about $0.01 per hour ($0.01 * 720 = $7.20) and includes 30 GB-mo of storage ($0.1 * 30 = $3).
Prices for the t2 instances can be found at https://aws.amazon.com/ec2/instance-types/t2/.
CPU Credits
Burstable instances such as the t2 instances have CPU credits. VMs accumulate a certain amount of credit every hour, depending on the instance type and uses credits when consuming more CPU than some threshold.