Agentic modernization, delivered. Accurate, complete, on time.
Monolith to Microservices: Extract Services Without Betting the System
Staged extraction with validation evidence — delivered, not licensed.
Swimm’s monolith to microservices migration is delivered as a scoped service: we map your monolith’s real dependencies, define defensible service boundaries, and extract services in validated stages — no big-bang rewrite. Swimm is a product-enabled service company. We combine deterministic analysis for accuracy, AI for scale, and SMEs to catch what tools miss.
The problem
Guesswork decomposition builds distributed monoliths
Decomposing a monolith on guesswork is how you end up with a distributed monolith instead of microservices.
01
Entangled dependencies make boundaries invisible. The lines between services look obvious on a whiteboard and disappear the moment you look at the actual code.
02
Big-bang decomposition risks the business. Rewriting everything at once means betting the system on a single, very long bet.
03
Critical logic exists only in veterans' heads. The people who know why a boundary has to sit where it does are the hardest thing to extract.
04
Past attempts left a distributed monolith. Services that call each other synchronously and share a database aren't microservices — they're the same coupling with more network hops.
How it works
Three layers, working together
01 · Deterministic
Deterministic analysis establishes ground truth
Deterministic dependency and data-flow mapping defines real service boundaries — not whiteboard guesses.
02 · AI
AI coordinates context at scale
AI applies verified extraction patterns across the codebase at scale.
03 · SME
SMEs validate before it ships
SMEs validate the proposed boundaries and behavior, adding what only they know and catching what the analysis alone can't.
Deterministic → AI → SME
A staged engagement
01
Assessment
A scoped plan, boundary map, risks, and success criteria — useful on its own even if you stop there.
02
Specification
Documents the flows and behavior each extracted service needs to preserve.
03
Modernization
Executes the extraction in stages, with visible progress throughout.
04
Enablement
Hands off test plans, playbooks, and training.
A workspace, not a stack of files
Every deliverable lives in one place. Yours to keep, queryable by your tools.
Delivered change
- Extracted services and APIs
- Refactored web and mobile clients
- API contracts and schemas
- One source of truth for business logic
System understanding
- Logic distribution map
- Architecture and dependency maps
- Dead-code and duplication analysis
- Critical flow documentation
- Queryable by MCP
Enablement assets
- Parity test suite
- Extraction playbooks
- Team training
- Queryable knowledge base
Proof
Validation evidence, not claims
Works with the tools you've already chosen
Methodology built and led by Swimm's founders — Oren, CEO · Gilad, CTO. Every deliverable ships with validation evidence.
Frequently asked questions
How does Swimm define microservice boundaries in a monolith?
From mapped dependencies and data flows, not whiteboard guesses — and SMEs pressure-test every proposed boundary before extraction starts.
Is monolith to microservices with Swimm incremental or big-bang?
Incremental. Extraction happens in staged, validated steps with visible progress, and each stage delivers validation evidence before the next begins.
What about business logic that only lives in people's heads?
That’s what SMEs are for — they capture the know-how tools can’t see and fold it into the specification before extraction begins.
Do we buy software to decompose our monolith?
No — this is a service engagement. Swimm’s engine runs the analysis; you get the extracted services and the system understanding behind them.
What do we get if we stop after the assessment?
A scoped plan, a boundary map, risks, and success criteria — a deliverable that stands on its own, whether or not you continue to extraction.
Extract services without betting the system
30 minutes. We'll talk boundaries, risk, and where to extract first.
Talk directly to our founders: Oren, CEO · oren@swimm.io — Gilad, CTO · gilad@swimm.io