AWS architecture and application migration to the cloud

I design production infrastructure in AWS and migrate existing applications to the cloud without downtime and surprises. Over recent years I've moved monoliths, microservices and old on-prem systems to AWS, so I know the pain points: hidden traffic costs, security groups that silently break connections, and databases that start misbehaving right after migration from bare metal. My goal is always the same — an environment that runs reliably, scales under load and ultimately costs less than before.

The work starts with an audit of current configuration and load profile, then I design the target architecture for your actual traffic. The foundation is a well-thought-out VPC, private and public subnets, IAM access with minimal privileges. I run compute on EC2, ECS or Fargate; keep data in RDS or Aurora with auto backups, objects and static content in S3. I add load balancing, autoscaling based on actual demand and dashboards with alarms in CloudWatch. Everything is described in Terraform, so the environment can be reviewed, versioned and recreated in another region on demand, and after launch I stay on for optimization: sizing instances and cleaning up forgotten resources that quietly eat your budget.

— VPC, subnets, routing, security groups and IAM
— EC2, ECS/Fargate, RDS/Aurora, S3, load balancing, autoscaling
— Terraform, CloudWatch monitoring and cost optimization