// services / architecture diagram

Architecture diagram

A clear, detailed visual map of your system — components, services, data flows, and integration points. We model it at the level that matters for your team: not too abstract to be useless, not too detailed to be unreadable.

An architecture diagram is not a nice-to-have. It is the single shared reference that keeps developers, stakeholders, and future decisions aligned. Without one, every conversation starts with "can someone explain how this works?" With one, the conversation starts with "here is what we have, now what do we change?"

SESSION · arch-diagram/build00:38
diagram depth
optimal

$ gradio diagram --target ./system

→ Scanning components & services…

→ Tracing data flows…

→ Mapping integration points…

✓ 14 components identified

✓ 6 data flows traced

✓ 3 external integrations mapped

⚠ 2 undocumented services found

⚠ 1 circular dependency detected

$ gradio diagram --render

✓ Diagram ready: C4 + data flow + deployment view

$

Without a diagram, every conversation starts with "can someone explain how this works?" With one, it starts with "here is what we have — now what do we change?"

Why teams need a diagram

Most teams do not have an up-to-date architecture diagram. They have a whiteboard photo from 18 months ago, a Confluence page nobody maintains, and the senior developer's memory.

Onboarding takes weeks, not hours

New developers spend their first weeks reverse-engineering the system by reading code and asking questions. A diagram compresses that to hours. It is the fastest way to turn a new hire into a productive contributor.

And when the senior developer who holds all the context in their head leaves? A diagram is the insurance policy you wish you had.

01

// without a diagram
→ "How does auth work?"
→ "Where does this data come from?"
→ "Is this service still used?"
→ "Who owns this component?"

Hidden dependencies surface late

A diagram forces you to trace every connection. Circular dependencies, undocumented services, and forgotten integrations become visible before they cause an incident — not after.

We have found services nobody remembered deploying, databases that were "temporary" in 2019, and integrations with vendors that no longer existed. All from drawing the diagram.

02

// what diagrams expose
→ Circular dependencies
→ Undocumented services
→ Forgotten vendor integrations
→ Orphaned databases & queues

Security review becomes possible

You cannot assess what you cannot see. A diagram makes the attack surface visible — where data enters, where it is stored, who can access it, and which boundaries are missing.

For compliance (GDPR, SOC 2, ISO 27001), a current architecture diagram is often a requirement, not a suggestion. We produce diagrams that satisfy auditors and engineers alike.

03

// security visibility
→ Data entry points mapped
→ Storage locations identified
→ Access boundaries visible
→ Compliance-ready documentation

What you receive

Not a single PNG file. A complete architecture documentation package your team can maintain and build on.

The diagram package

Three core views, each serving a different audience: a component diagram for engineers, a data flow diagram for security and compliance, and a deployment view for ops and scaling planning.

Every diagram is delivered in an editable format — Draw.io, Excalidraw, or PlantUML. Your team owns the source files and can update them without us. No proprietary tool lock-in, no "contact us for changes."

✓ Editable source   ✓ Multiple views   ✓ You own everything

// component

Component diagram

Every service, database, API, queue, and external integration — with clear labels, boundaries, and ownership.

// data flow

Data flow diagram

How information moves: from user input through APIs, services, databases, and third-party integrations. Annotated with protocol, format, and frequency.

// deployment

Deployment view

Where each component runs: cloud regions, containers, serverless functions, on-premise systems. Network boundaries, load balancers, CDN.

// bonus

Written rationale + walkthrough

A document explaining why the architecture looks the way it does: trade-offs, constraints, known debt. Plus a 30-minute recorded walkthrough call.

Levels of detail we cover

We do not force one diagram style. We choose the right level for your team and your stage.

What it shows
Best for
System context
Your system as one box, surrounded by users and external systems
Stakeholders, investors, onboarding
Container view
Major services, databases, queues, and their connections
Architects, tech leads, planning
Component view
Internal structure of each service: modules, packages, key classes
Developers, code-level decisions
Data flow
How data moves: inputs, transformations, storage, outputs
Security review, compliance, data engineering
Deployment
Infrastructure: regions, containers, networks, load balancers
DevOps, scaling planning, cost analysis

How it works

Five steps from discovery to a diagram your team can rely on. Total turnaround: 1–2 weeks.

1

Discovery

We interview your team — architects, senior developers, and ops — to understand the system as it actually works, not as the documentation says it works. We collect existing diagrams, codebase access, and deployment configs.

2

System mapping

We trace every component, connection, and data flow. We identify undocumented services, hidden dependencies, and integration points. This is where the surprises usually surface.

3

Modeling

We draw the architecture at the right level of detail for your stage and audience. We produce multiple views — context, container, data flow, deployment — so each stakeholder gets the perspective they need.

4

Review & challenge

We present the diagram to your team and challenge assumptions around scalability, security, and maintainability. We validate that the diagram matches reality and update it based on feedback.

5

Delivery & walkthrough

You receive the editable diagram files, the written rationale document, and a 30-minute walkthrough call. Your team owns the files and can maintain them going forward.

Pricing

Fixed-price packages. The scope is agreed before we start — no scope creep, no surprise invoices.

Standard — €300

For growing systems. Full architecture map (context + container + data flow), security and scalability notes, written report, and walkthrough call. This is what most teams choose.

full system · 3 diagram views · walkthrough

Basic — €250

For small products or a single subsystem. Component diagram, data flow diagram, and a one-page written summary. One review round included.

1 subsystem · 2 diagram views · 1 review

Advanced — €500

For complex systems and scale. Multi-layer architecture diagrams (context, container, component), security review, codebase examination, 12–20 page report, walkthrough call, and 30 days follow-up support.

Maintenance

Quarterly updates to your diagram after major changes. Keeps the diagram alive without internal effort.

Greenfield design

Target-state architecture for systems not yet built. We design from requirements, constraints, and team skills.

Payment & ownership

50% deposit to start, 50% on delivery. Files are delivered in editable format (Draw.io, Excalidraw, or PlantUML — your choice). You own all files. Prices exclude VAT. If you are not sure which package fits, book a consultation and we will tell you.

Frequently asked questions

Common questions about the architecture diagram service. If yours is not here, email us.

What format do we receive the diagram in?

You choose: Draw.io (.drawio), Excalidraw (.excalidraw), or PlantUML (.puml). All are editable and free tools. We can also export PNG and SVG for presentations. You own the source files.

Do you need access to our codebase?

It helps but is not required. We can work from interviews, existing documentation, and deployment configs. Codebase access lets us verify that the diagram matches reality and catch undocumented services. We sign an NDA before any access.

How long does it take?

A Basic diagram takes 3–5 business days. Standard takes 1–2 weeks. Enterprise depends on system complexity — we agree on a timeline before starting. The discovery interviews are usually 2–3 hours total, spread across a few days.

What if our system changes after the diagram is done?

The diagram is delivered in an editable format, so your team can update it. We also offer a maintenance retainer — we update the diagram quarterly or after major changes — if you prefer to keep it external.

Can you create diagrams for a system we have not built yet?

Yes. We create target-state architecture diagrams for greenfield projects. We work from your requirements, constraints, and team skills to design an architecture you can build with confidence.

Do you follow C4, TOGAF, or another framework?

We use the C4 model as a default because it is practical and widely understood. If your organisation uses TOGAF, ArchiMate, or another framework, we adapt. The goal is a diagram your team understands, not framework compliance for its own sake.

Need a clear picture of your system?

Request an architecture diagram and get your team aligned. No commitment — we will tell you honestly if a diagram is the right next step for you.