Dynamic Scaling

• Need for flexibility
  • diagram
  • If you’re running a web server, you wanna make sure it can handle all incoming requests
  • W/o cloud computing
    • If your workload spiked at certain times, your capacity would be exceeded
    • Capacity would be fixed, and paying for idle resources
  • cloud computing
    • you can adjust the capacity dynamically based on the traffic pattern/requirements
    • you can increase/decrease the number of instances as u need them

Services

These services are often used together to create a scalable and highly available architecture

• EC2 Auto Scaling - add/remove instances
• Elastic Load Balancer (ELB) - distributes traffic