Cloud & AWS architecture, matched to the workload.
"Serverless" isn't the answer to every system, and neither is a fleet of long-running containers. Feneco designs AWS architecture from a working set of models — N-tier, serverless, container-based, event-driven — chosen for the traffic shape, the team and the compliance constraints of the system in front of us.
Architectural models we choose from
N-tier architecture
Presentation, application and data layers separated behind clear boundaries — the right default for systems where the team and the traffic pattern are both predictable.
Serverless architecture
Lambda, API Gateway and managed event sources for workloads that are bursty, infrequent, or need to scale to zero — no fleet to keep warm for traffic that isn't there yet.
Container-based (ECS / Fargate)
For services that need to run continuously with predictable resource limits, behind an ALB, without managing the underlying EC2 fleet.
Event-driven
SQS, SNS and EventBridge decoupling services that don't need to know about each other — for workflows where a slow downstream shouldn't block a fast upstream.
What every engagement is built on
Whichever model fits, these foundations don't change:
Infrastructure as code
The entire AWS footprint — VPC, RDS, compute, load balancers, CDN, secrets — defined in Terraform, not clicked together in a console nobody can reproduce.
No long-lived credentials
Deploys run through GitHub Actions with OIDC — short-lived, scoped credentials issued per run, not an AWS access key sitting in CI secrets indefinitely.
Private by default
Databases and internal load balancers get no public endpoint. The region is chosen for latency to the actual user base, not defaulted to whichever is cheapest.
Zero-downtime delivery
Blue/green rollouts, required-reviewer gates on production deploys, and real-time alerting — so a bad deploy is caught before it's a bad night.
Proof
Before Feneco existed, its founding engineer led the Buy Now Pay Later platform's move to a cloud-native, serverless architecture on AWS at Commonwealth Bank — now processing hundreds of thousands of transactions a day. At Feneco, Liren Language & Communications' platform runs on a full Terraform-managed AWS footprint — VPC, RDS, ECS Fargate, ALB, CloudFront/S3 and Secrets Manager — deployed through GitHub Actions with OIDC and no public database or load-balancer endpoint.
When the AWS footprint is part of a larger rebuild, see Legacy Modernization.
If you're choosing between AWS architectures and want the tradeoffs made explicit before you commit, let's talk.