AWS Compute

• Compute are the services where we can run applications. In compute services we choose cpu and ram combination
  
• Cloud Computing Deployment Options
  • IaaS (Infrastructure as a Service)
  • PaaS (Platform as a Service)
  • SaaS (Software as a Service)
    
• Virtual Machines (IaaS): AWS offers virutal machines by a service called as EC2 (Elastic Compute Cloud)

Terms

• Service: This is offered by AWS to realize certain application component (Database = RDS, Virtual Machine = EC2, K8s = EKS)
• Resource: Using Service what we create is Resource
• Cloud Services Provider: AWS, Azure, GCP (Any organization offering cloud services)
• Pay as You Go: Using services on demand and then bills will be generated monthly. In AWS, service has a billing (just like a metered connection)

AWS EC2

• Elastic Compute Cloud is a IaaS offering from AWS which allows to create
  • Windows
  • Linux
  • Mac
• Service: EC2, Resource: EC2 instance.
• Factors impacting cost of EC2 instance
  • CPU
  • RAM
  • Disk Storage
  • Operating Sytem
    
• AWS EC2 Purchasing Options
  • On-demand
  • Spot Instances
  • Reserved Instances