How can you implement high availability in VPC?
To implement high availability in a VPC, I distribute resources across multiple Availability Zones, create redundant public and private subnets, use load balancers and Auto Scaling Groups, deploy NAT Gateways in each AZ, configure Multi-AZ databases, and monitor the environment with CloudWatch and Route 53 health checks. This eliminates single points of failure and ensures the application remains available during infrastructure outages.
Internet
│
Application Load Balancer
/ \
/ \
AZ-A AZ-B
Public Subnet Public Subnet
│ │
EC2 Instance EC2 Instance
│ │
Private Subnet Private Subnet
│ │
RDS Primary RDS Standby
│ │
NAT Gateway-A NAT Gateway-B
│ │
Internet GW (IGW)