2Designing availability, scalability, and migration

• 2.1Designing for high availability, scalability, and disaster recovery

  Understand availability levels (zonal/regional/multi-regional), elasticity via managed instance groups (MIGs) and autoscaling, traffic distribution via load balancers, and disaster recovery strategies (backup-and-restore, warm/hot standby) based on RTO/RPO.

• 2.2Planning migration and hybrid/multi-cloud

  Understand choosing migration strategies (lift-and-shift, improve-and-move, refactor), migration tools (Migrate to Virtual Machines, Database Migration Service, Storage Transfer Service, Transfer Appliance), hybrid/multi-cloud connectivity (Cloud VPN, Cloud Interconnect), and phased migration planning.