AWS Certified Solutions Architect - Professional (#357)

A user wants to configure AutoScaling which scales up when the CPU utilization is above 70% and scales down when the CPU utilization is below 30%. How can the user configure AutoScaling for the above mentioned condition?

Configure ELB to notify AutoScaling on load increase or decrease
Use AutoScaling with a schedule
Use AutoScaling by manually modifying the desired capacity during a condition
Use dynamic AutoScaling with a policy