# Cloud Migration Checklist

## Pre-Migration Assessment

### Current Environment Analysis

- [ ] Current infrastructure documented
- [ ] Application architecture analyzed
- [ ] Dependencies identified
- [ ] Performance baseline established
- [ ] Security requirements documented
- [ ] Compliance requirements documented
- [ ] Cost analysis completed

### Cloud Strategy Planning

- [ ] Cloud migration strategy defined
- [ ] AWS services selected
- [ ] Architecture design completed
- [ ] Migration approach selected (Lift & Shift, Replatform, Refactor)
- [ ] Timeline established
- [ ] Resource allocation confirmed
- [ ] Risk assessment completed

## Application Cloud Preparation

### Cloud-Native Patterns

- [ ] Stateless design implemented
- [ ] Configuration externalized
- [ ] Secrets management implemented
- [ ] Health checks implemented
- [ ] Metrics and monitoring implemented
- [ ] Logging standardized
- [ ] Error handling improved

### Application Modernization

- [ ] Spring Boot embedded server configured
- [ ] Cloud-native libraries integrated
- [ ] AWS SDK integrated
- [ ] Service discovery implemented
- [ ] Circuit breaker patterns implemented
- [ ] Retry mechanisms implemented
- [ ] Timeout configurations set

## AWS Infrastructure Setup

### Networking and Security

- [ ] VPC created and configured
- [ ] Subnets configured
- [ ] Security groups configured
- [ ] Network ACLs configured
- [ ] Route tables configured
- [ ] Internet Gateway configured
- [ ] NAT Gateway configured (if needed)

### Compute Services

- [ ] EC2 instances configured (if using)
- [ ] ECS cluster configured (if using)
- [ ] EKS cluster configured (if using)
- [ ] Lambda functions configured (if using)
- [ ] Auto-scaling configured
- [ ] Load balancer configured
- [ ] Launch templates configured

### Database Services

- [ ] RDS instance configured
- [ ] Database subnet group created
- [ ] Parameter group configured
- [ ] Security group configured
- [ ] Backup configuration set
- [ ] Multi-AZ configuration (if needed)
- [ ] Read replicas configured (if needed)

### Storage Services

- [ ] S3 buckets created
- [ ] S3 bucket policies configured
- [ ] EBS volumes configured (if using)
- [ ] EFS configured (if using)
- [ ] Backup strategies implemented
- [ ] Lifecycle policies configured

## Data Migration

### Database Migration

- [ ] Database migration plan created
- [ ] Data backup completed
- [ ] Database schema migrated
- [ ] Data migration executed
- [ ] Data validation completed
- [ ] Performance testing completed
- [ ] Rollback procedures tested

### Application Data Migration

- [ ] File storage migrated to S3
- [ ] Configuration data migrated
- [ ] User data migrated
- [ ] Application state migrated
- [ ] Cache data migrated
- [ ] Log data migrated

## Application Deployment

### Containerization (if applicable)

- [ ] Docker images created
- [ ] Container registry configured
- [ ] Kubernetes manifests created
- [ ] Service mesh configured (if using)
- [ ] Container security configured
- [ ] Container monitoring configured

### Deployment Automation

- [ ] CI/CD pipeline configured
- [ ] Deployment scripts created
- [ ] Infrastructure as Code implemented
- [ ] Blue-green deployment configured
- [ ] Rolling deployment configured
- [ ] Canary deployment configured

### AWS Services Integration

- [ ] API Gateway configured
- [ ] CloudFront configured (if using)
- [ ] Route 53 configured
- [ ] Certificate Manager configured
- [ ] Secrets Manager configured
- [ ] Parameter Store configured

## Monitoring and Observability

### Application Monitoring

- [ ] CloudWatch logging configured
- [ ] Application metrics configured
- [ ] Custom metrics implemented
- [ ] Health check endpoints configured
- [ ] Error tracking configured
- [ ] Performance monitoring configured

### Infrastructure Monitoring

- [ ] EC2 monitoring configured
- [ ] RDS monitoring configured
- [ ] S3 monitoring configured
- [ ] Load balancer monitoring configured
- [ ] Auto-scaling monitoring configured
- [ ] Cost monitoring configured

### Alerting and Logging

- [ ] CloudWatch alarms configured
- [ ] SNS topics configured
- [ ] Email notifications configured
- [ ] Slack notifications configured (if using)
- [ ] Log aggregation configured
- [ ] Log analysis configured

## Security Implementation

### AWS Security Services

- [ ] IAM roles and policies configured
- [ ] AWS Config configured
- [ ] CloudTrail configured
- [ ] GuardDuty configured (if using)
- [ ] Security Hub configured (if using)
- [ ] WAF configured (if using)

### Application Security

- [ ] HTTPS enforcement configured
- [ ] Security headers configured
- [ ] Input validation implemented
- [ ] Authentication configured
- [ ] Authorization configured
- [ ] Security testing completed

## Cost Optimization

### Cost Management

- [ ] Cost allocation tags configured
- [ ] Cost budgets configured
- [ ] Reserved instances purchased (if applicable)
- [ ] Spot instances configured (if applicable)
- [ ] Auto-scaling optimized
- [ ] Resource rightsizing completed

### Performance Optimization

- [ ] Application performance optimized
- [ ] Database performance optimized
- [ ] Network performance optimized
- [ ] Caching strategies implemented
- [ ] CDN configured (if applicable)
- [ ] Performance testing completed

## Documentation and Training

### Technical Documentation

- [ ] Migration documentation created
- [ ] AWS architecture documented
- [ ] Deployment procedures documented
- [ ] Configuration guide created
- [ ] Troubleshooting guide created
- [ ] Best practices documented

### Operational Documentation

- [ ] Monitoring procedures documented
- [ ] Backup procedures documented
- [ ] Disaster recovery procedures documented
- [ ] Security procedures documented
- [ ] Maintenance procedures documented
- [ ] Team handover completed

## Go-Live Validation

### Pre-Deployment Checks

- [ ] All tests passing
- [ ] Code review completed
- [ ] Security scan passed
- [ ] Performance testing completed
- [ ] Documentation updated
- [ ] Team training completed

### Deployment Validation

- [ ] Application deployed successfully
- [ ] AWS infrastructure working
- [ ] Health checks passing
- [ ] Load balancing working
- [ ] Monitoring active
- [ ] Rollback procedures tested

### Post-Deployment Validation

- [ ] Application accessible and working
- [ ] Performance metrics acceptable
- [ ] Error logging working
- [ ] Auto-scaling working
- [ ] Security requirements met
- [ ] Cost optimization achieved
- [ ] Team notified of migration