Microservices Migration

Microservices migration โ€” so teams ship without waiting on each other.

When one deploy makes the whole company hold its breath, the monolith is the bottleneck. We decompose it into microservices โ€” bounded contexts, clean APIs, containers, distributed tracing โ€” so teams deploy independently and a single failure stays contained.

  • Strangler-fig migration
  • No big-bang rewrite
  • Data kept consistent
40ร—

More frequent deploys

3.4ร—

Lower p95 latency

1 service

Blast radius (was full outage)

0

Big-bang rewrites

Why decompose the monolith

Independence is the whole point

Microservices aren't a fashion statement โ€” they exist to let teams deploy on their own cadence and to keep one failure from taking everything down.

Decompose by capability

We split the monolith along real business boundaries โ€” orders, billing, search โ€” not arbitrary lines, so each service owns one job and its own data.

Deploy independently

Teams ship their service on their own cadence behind an API gateway. One deploy stops making the whole company hold its breath.

Failures stay contained

When a service goes down, the blast radius is that service โ€” not a full-system outage. Resilience patterns keep the rest serving traffic.

Observable by design

Distributed tracing, centralized logging, and per-service metrics ship with the migration, so a decomposed system is one you can actually operate.

What you walk away with

A system you can operate

Decomposition is only a win if the result is observable and consistent. You get the services plus everything needed to run them in production.

  • Microservices architecture and service-boundary design
  • Decoupled, containerized services with clean APIs
  • API gateway and routing configuration
  • Data-sync patterns (outbox / saga) for consistency
  • Distributed tracing and centralized logging dashboards
  • CI/CD pipelines for independent per-service deploys

From monolith to mesh

How the migration runs

  1. 1

    Decomposition analysis

    We map the monolith to business capabilities and design service boundaries and API contracts before extracting anything.

  2. 2

    Gateway & first service

    An API gateway goes in front, and the highest-value capability is extracted as the first independent service.

  3. 3

    Strangler-fig migration

    Capabilities move across one at a time, with data kept in sync and traffic routed incrementally to the new services.

  4. 4

    Telemetry & cutover

    Tracing, logging, and integration tests confirm each service before routing fully cuts over and the monolith shrinks away.

Migration, in production

Plata: a marketplace monolith decomposed without a freeze

A marketplace's single deploy pipeline meant one bad release froze every team and one bad query took the whole site down. We migrated it to services with the Strangler Fig pattern.

Plata Marketplace

Online marketplace ยท USA

Marketplace ยท E-commerce
Independent deploys per week40ร— more often
Before
1 / week
After
40 / week
p95 API latency under load3.4ร— faster
Before
820 ms
After
240 ms
Blast radius of a service failurecontained
Before
full outage
After
1 service
1 โ†’ 40

Deploys/week

240 ms

p95 latency (was 820 ms)

1 service

Failure blast radius

0

Big-bang rewrite needed

โ€œA single bad deploy used to freeze every squad and risk the whole site. pyronix peeled the monolith apart one capability at a time โ€” now teams ship dozens of times a week and an incident is one service, not a homepage outage.โ€
โ€” Director of Platform, Plata Marketplace
GoTypeScriptKafkaPostgreSQLKubernetesOpenTelemetryRead the full case study

Straight answers

Microservices migration questions

What is microservices migration?

Microservices migration is the process of breaking a monolithic application into smaller, independently deployable services organized around business capabilities. Each service owns its data and exposes a clean API, so teams can build, deploy, and scale their part of the system without coordinating a single big release.

What is the Strangler Fig pattern?

The Strangler Fig pattern migrates a monolith incrementally: new microservices are built alongside the legacy system, and an API gateway routes specific requests to the new services while the rest still hit the monolith. Over time more functionality moves across until the monolith is fully replaced โ€” with no risky big-bang rewrite or extended outage.

How do you keep data consistent across services during migration?

We use patterns like the transactional outbox and sagas to synchronize data asynchronously between services, so a workflow that spans several services stays correct without distributed locks. During migration we keep the monolith and new services in sync until each capability has fully moved over.

Do we have to migrate the whole monolith at once?

No โ€” and you shouldn't. We decompose by business capability, prioritizing the parts that change most or scale worst, and migrate them one at a time behind the API gateway. You get value from the first extracted service while the rest of the system keeps running unchanged.

Do you use Docker and Kubernetes?

Yes. Services are packaged as Docker containers and deployed to orchestrated environments such as EKS, AKS, or ECS, with CI/CD pipelines, distributed tracing, and centralized logging so the resulting system is observable and operable, not just decomposed.

Break the monolith, free the teams.

Tell us where the monolith hurts most โ€” the slow deploys, the shared outages. We'll design the service boundaries and a strangler-fig path that ships value from the first extraction.

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