Sterling Digital Cloud Migration
Engineered a highly available, secure, decoupled multi-tier AWS environment for a cloud migration, aligned with the AWS Well-Architected Framework.
Business value
For a regulated digital-services team, this architecture replaces manually managed, single-instance infrastructure with a secure and scalable AWS operating model. Multi-AZ services and a 2–4 instance Auto Scaling range improve continuity and resource utilisation, while central identity and reusable bootstrapping reduce repeat configuration effort and access risk.
The problem
Sterling Digital Solutions needed a cloud migration that was secure, highly available, audit-ready and decoupled.
What I built
- 01
Built a Multi-AZ VPC with public/private subnet segregation and stateful security groups enforcing least privilege.
- 02
Integrated AWS Simple AD for centralised directory services, automated Linux RBAC and SSSD domain joining.
- 03
Deployed an Auto Scaling Node.js API tier behind an ALB, bootstrapped via User Data scripts handling DNS, EFS mounting and security config.
- 04
Provisioned Multi-AZ RDS subnets, DynamoDB for market data, shared EFS storage and versioned S3 buckets for compliance.
Project stages
01 / 18
Stage 01 — VPC build-out: subnets, internet gateway, NAT gateway, route tables and associations all provisioned successfully.