Services / AWS Serverless
Event-Driven AWS Serverless Architecture
We design and build event-driven AWS infrastructure using Lambda, SQS, SNS, and EventBridge — with CDK infrastructure-as-code and full observability baked in.
Deliverables
What We Build
Every engagement produces working, deployed infrastructure — not slide decks. Here is what you get.
- AWS Lambda function development in TypeScript
- SQS & SNS event-driven pipelines with DLQ configuration
- CDK infrastructure-as-code stacks (fully reproducible)
- API Gateway REST and HTTP API design
- DynamoDB data modeling and access pattern design
- CloudWatch dashboards, alarms, and observability setup
- Cost optimization and right-sizing
Tech Stack
The Technologies We Use
We work exclusively with the AWS-native services that are purpose-built for serverless workloads — no third-party frameworks that abstract away control.
Event-driven compute — no servers to manage, scales to zero.
Durable message queuing with dead-letter queue configuration.
Fan-out pub/sub messaging across services and endpoints.
Event bus for loosely coupled, rule-based routing.
Infrastructure-as-code in TypeScript — fully reproducible stacks.
REST and HTTP APIs with request validation and auth.
Single-table design and access pattern modeling at scale.
Global CDN for low-latency asset and API delivery.
Object storage for assets, data lakes, and static hosting.
How We Work
Our Engagement Approach
SiteIT brings a set of non-negotiable engineering standards to every AWS project. These aren't optional add-ons — they are how we build.
Serverless-Native Design
We don't lift and shift. Every architecture is designed from the ground up around serverless primitives — event sources, function boundaries, and async messaging patterns that eliminate idle compute costs.
CDK Infrastructure-as-Code
All infrastructure is expressed as CDK TypeScript stacks. Nothing is clicked together in the console. Every resource is version-controlled, peer-reviewed, and reproducible across environments.
TypeScript Throughout
Lambda handlers, CDK stacks, shared utilities — all TypeScript. Shared types and validation schemas eliminate entire classes of runtime errors before code ever deploys.
Full Observability Baked In
CloudWatch dashboards, structured logging, alarms on error rates and latencies, and distributed tracing with X-Ray are included from day one — not added as an afterthought.
Cost-Aware Architecture
We size DynamoDB capacity modes correctly, configure Lambda memory for the best price-performance ratio, and use S3 lifecycle policies and CloudFront caching aggressively. You pay for what you use.
Get Started
Ready to build serverless on AWS? Let's talk.
Whether you're starting from scratch or modernizing an existing workload, we can design and deliver the architecture you need.