How would you handle a sudden traffic spike in your AWS application?

Handling traffic spikes: 1) Auto Scaling Groups with appropriate scaling policies, 2) Application Load Balancer for traffic distribution, 3) CloudFront CDN for static content, 4) ElastiCache for database load reduction, 5) RDS read replicas for read scaling, 6) SQS for decoupling and buffering, 7) CloudWatch alarms for proactive monitoring.