SaaS Infrastructure Architecture
Engineering a globally distributed, high-frequency trading platform with zero downtime and sub-second replication.
The Problem
A late-stage B2B FinTech startup had developed a revolutionary algorithmic trading dashboard. However, their monolithic legacy infrastructure was hosted on a single-region cloud deployment.
As their global user base expanded, latency became a critical issue—traders in Asia were experiencing multi-second delays compared to those in New York. Furthermore, a recent regional cloud outage caused massive financial disruption for their users. They required a drastic architectural overhaul to achieve 99.999% global availability, sub-100ms latency worldwide, and absolute fault tolerance.
The Architecture
Our Cloud Engineering team designed an Active-Active multi-region architecture spanning three AWS regions (US-East, EU-Central, AP-Southeast).
We decoupled the monolithic backend into highly specialized microservices, containerizing them with Docker and orchestrating them via Amazon EKS (Elastic Kubernetes Service). Global traffic was routed intelligently using AWS Route 53 with latency-based routing policies, ensuring users instantly connected to the geographically closest healthy cluster.
For the data layer, we migrated their standalone SQL database to Amazon Aurora Global Database, achieving sub-second cross-region replication. High-velocity trading tickers were broadcasted in real-time utilizing a combination of Amazon Kinesis and Redis ElastiCache pub/sub channels. The entire infrastructure was codified using Terraform (IaC), making disaster recovery instant and reproducible.
Technology Stack
The Outcome
Want similar results?
Let's discuss your project — we'll build the right solution together.