Architecture Case Studies

Real-world Architecture case studies: what happened in production, the architecture behind it, the numbers and the lessons to take to your own team.

Browse all case studies

1. How a 120-Engineer SaaS Company Cut Service Onboarding from 3 Days to 2 Hours with Backstage Golden Paths

   A mid-size B2B SaaS company replaced a fragmented self-service mess with a Backstage IDP and opinionated golden paths, dropping new-service onboarding from 3 days to under 2 hours and halving platform support tickets.

   Architecture · intermediate · 12 min read

2. How a B2B SaaS Company Strangled Its Rails Monolith Into Microservices Without a Big Bang Rewrite

   A 120-engineer SaaS team used the strangler fig pattern to extract five domains from a 9-year-old Rails monolith, cutting deploy time from 47 minutes to 6 and reducing p99 latency by 62%.

   Architecture · intermediate · 12 min read

3. When Lambda Got Expensive: Moving a High-Throughput API from Lambda to ECS Fargate

   A B2B SaaS company's Lambda-based API hit cold-start and cost ceilings at scale; migrating to ECS Fargate cut monthly compute costs by 61% and p99 latency by 74%.

   Architecture · intermediate · 12 min read