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System Architecture / service detail
Decisions that determine your next 18 months
01

SystemArchitecture

SITUATIONS WE KNOW WELL
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"The product works today. But every new feature takes longer than the last one, and the team is starting to avoid touching certain parts of the codebase."

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"We're planning a major expansion — new markets, new integrations, new users — and we're not sure the current architecture can handle it without a rewrite."

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"Our system was built by different teams at different times with different assumptions. The result works, but nobody fully understands how all the pieces fit together."

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"We're evaluating build-versus-buy for a critical capability, and we need someone who can assess the architectural impact of either decision before we commit."

HOW WE WORK

Four phases. No shortcuts.

Four phases. No phase is skipped. Each one produces something you can use, not just something that enables the next phase.

Phase 01 / 04
01

Discovery & Mapping

Phase 01 of 04
What happens

We map your current system landscape — codebase structure, data flows, service dependencies, deployment architecture, and team workflows. We identify the hot spots: the parts of the system where complexity is hiding, performance is degrading, or knowledge is concentrated in one person.

What you do

Give us access to your codebase, infrastructure, and team. Be honest about which parts of the system nobody wants to touch and why.

What you leave with

A system map that shows what exists, how it connects, and where the risk is hiding — in terms your whole team can understand.

02

Target Architecture

Phase 02 of 04
What happens

We design the target architecture based on your business goals, not technology trends. We define service boundaries, data ownership, integration patterns, and migration sequencing — before any code is written or moved.

What you do

Review the architecture against real scenarios your business will face. Push back on complexity that doesn't serve a concrete need.

What you leave with

A documented target architecture with explicit trade-offs — why each decision was made and what it means for your team.

03

Migration & Build

Phase 03 of 04
What happens

We execute the migration or build in sequenced phases, each with a clear definition of done. Every phase leaves the system in a working state — no long-running branches, no big-bang cutovers. We establish patterns your team can follow for future work.

What you do

Assign team members to work alongside us during each phase. Review deliverables and sign off before the next phase begins.

What you leave with

A working system delivered incrementally, with each phase independently verifiable and deployable.

04

Handover & Governance

Phase 04 of 04
What happens

We hand over architecture documentation, decision records, and runbooks. We establish lightweight governance — the decision framework your team uses to keep the architecture consistent as they build new features without us.

What you do

Participate in handover sessions. Take ownership of the governance framework — it only works if your team uses it.

What you leave with

A documented, governed architecture your team can extend independently — plus the decision framework to keep it consistent.

WHAT YOU GET

Deliverables are only useful if you know what they change.

Each output needs a commercial consequence. These rows show what the work changes, not just what gets handed over.

Current system map

Your team finally sees how the system actually works — not how anyone remembers it working.

Target architecture document

Every engineering decision has a clear rationale. New team members can understand the system without depending on tribal knowledge.

Migration plan with phases

You know what moves when, in what order, and what each phase costs — before any commitment is made.

Decision records & runbooks

Future teams understand why things are the way they are — not just what was built.

Architecture governance framework

Your team can make consistent architecture decisions without depending on external input for every choice.

COMMON QUESTIONS

Common questions

You need a sense that something isn't right — features taking too long, deployments getting risky, scaling concerns. You don't need a diagnosed problem. The discovery phase exists to find out what's actually wrong before we propose a solution.

Heavily involved during discovery and architecture review — nobody knows your system better than the people who work in it every day. During migration and build, we work alongside your team so knowledge transfer happens naturally.

You do. All architecture documents, decision records, and governance frameworks are yours. We don't retain any rights to the work product.

START A CONVERSATION

Tell us what you're building and where you're stuck.

We respond with a perspective, not a proposal. If there's a fit, we'll suggest a short call. If there isn't, we'll say that too.

system architecture inquiryFour fields. Nothing else.

We typically reply within one business day.

System Architecture — DarviLabs