Legacy Documentation Automation

S*.doc documents your legacy system. You focus on the business

S*.doc documents your legacy system. You focus on the business

Automated documentation of code, C4 architecture and business processes – deployed on your infrastructure and compliant with enterprise requirements.

Technology debt

Every company has a system
that nobody really understands anymore

Every company has a system that nobody really understands anymore

Legacy systems have been built up over many years. Documentation – if it exists at all – is out of date, scattered, or resides solely in the minds of a few key employees. When they leave, that knowledge goes with them.

Four symptoms you’ll recognise:

01

A new developer needs months to become productive in a complex system.

02

Architectural documentation exists only on paper – or does not exist at all.

03

Answers to “how does it work?” questions require hours of meetings and code analysis.

04

Non-technical stakeholders – product owners, analysts, and managers – must involve developers in every question about the system instead of finding the answers themselves.

58 %

According to research, that is how much time programmers spend reading and understanding code – rather than writing it

AI Documentation Automation

Documentation that creates itself

S*.doc is a proprietary solution from the AI Documentation Automation suite that first analyses your system and then generates multi-level documentation – automatically, in full accordance with your structure and requirements.

It consists of two main components that work together:

Documentary

AI agents that read the code for you

AI agents analyse the source code in depth and, based on this, generate documentation at three levels of detail, tailored to different audiences.

Knowledge Assistant

RAG bot integrated with Microsoft Teams

A RAG bot integrated directly into Microsoft Teams, enabling the team to ask questions in real time and receive answers based on both the generated documentation and the source code.

360° knowledge gevernance

Three levels of documentation. One system

Documentation tailored to the recipient – whether they are a developer, an architect or the management team.

Automatic generation of Java/C# documentation

Code documentation

Generated automatically, taking into account the specific features of the programming language – Java, C#, TypeScript, C++. It divides the content into logical sections, omits irrelevant elements and allows you to tailor the type of documentation to the audience: technical for developers or simplified for end users.

Architectural visualisation of C4 & Mermaid

Architectural documentation in accordance with the C4 model

S*.doc automatically generates Mermaid diagrams for the context, container and component views – in accordance with the widely recognised C4 model.

So, no more manually drawing diagrams that become outdated after the first sprint.

Business Process Mapping (BPM)

Business process documentation

S*.doc models the flows within the system and how its components interact – process steps, interdependencies between components, and data exchange points.

Instead of asking, “How does it work with other things?” – you can check it out in 30 seconds.

360° knowledge gevernance

Trzy poziomy dokumentacji. Jeden system

Documentation tailored to the recipient – whether they are a developer, an architect or the management team.

Automatic generation of Java/C# documentation

Read docs kodu

Generowana automatycznie z uwzględnieniem specyfiki języka programowania – Java, C#, TypeScript, C++. Dzieli treść na logiczne sekcje, pomija elementy nieistotne i pozwala dostosować typ dokumentacji do odbiorcy: techniczna dla deweloperów lub uproszczona dla użytkowników końcowych.

Dzięki temu zyskujesz:

  • Opis każdego modułu w czytelnej, ustrukturyzowanej formie.
  • Dodatkowo automatyczne pomijanie boilerplate’u i kodu generowanego.
  • Również możliwość wygenerowania raportu zgodności z wytycznymi bezpieczeństwa lub raportu optymalizacji technologicznej.

Architectural visualisation of C4 & Mermaid

Read docs architektoniczna zgodnia z modelem C4

S*.doc automatically generates Mermaid diagrams for the context, container and component views – in accordance with the widely recognised C4 model.

So, no more manually drawing diagrams that become outdated after the first sprint.

W efekcie zyskujesz:

  • Przede wszystkim spójną wizualizację architektury na różnych poziomach szczegółowości.
  • Po drugie, czytelną prezentację dla zarządu, audytorów i nowych członków zespołu.

Business Process Mapping (BPM)

Read docs przepływów biznesowych

S*.doc models the flows within the system and how its components interact – process steps, interdependencies between components, and data exchange points.

Zamiast pytać „jak to ze sobą gra?” – sprawdzasz to w 30 sekund.

Dzięki temu zyskujesz:

  • Po pierwsze, wizualizację ścieżek użytkownika i komunikacji między usługami.
  • Po drugie, opis logiki wewnętrznej w języku zrozumiałym dla biznesu i osób technicznych jednocześnie.
  • Oprócz tego – wsparcie dla wstecznego code review i analizy zależności.

AI-Driven RAG

Knowledge assistant – the entire system
in a single question

Knowledge assistant – the entire system in a single question

The generated documentation feeds into the RAG (Retrieval-Augmented Generation) engine, which combines vector and text search across source code and project resources.

The result: a bot available in Microsoft Teams that provides precise answers to the team’s questions – without having to search Confluence or wait for a senior developer.

Sample questions:

S

S*.doc Assistant

Microsoft Teams · online

How does the authorisation module work?

14:32

The authorization module (AuthorizationModule.java) handles JWT authentication and session management. It implements OAuth 2.0 with RBAC. Keys are rotated every 24 hours by KeyRotationService.

14:32

Which services communicate with it?

14:33

The authorization module (AuthorizationModule.java) handles JWT authentication and session management. It implements OAuth 2.0 with RBAC. Keys are rotated every 24 hours by KeyRotationService.

14:33

Adaptive System Architecture

Adapted to your system. Not the other way around

S*.doc can be customised and configured to meet the specific needs of an organisation.

Dimensions

Features

Technology

Type of documentation

Special reports

Level of detail

Tailored to the audience –

Operational efficiency audit

How much is it costing you
to have no documentation?

That’s not a rhetorical question.

3-6 months

Onboarding a developer into a complex legacy system takes an average of 3‑6 months

Bus factor

The departure of a key employee with unstructured information poses a real operational risk

Audit costs

Security and compliance audits carried out without up-to-date documentation result in additional costs and delays

S*.doc shortens onboarding time, reduces dependency on individual knowledge, and delivers documentation that is always up to date – because it is generated automatically.

For whom

S*.doc works anywhere system complexity outpaces documentation

S*.doc works
anywhere system complexity outpaces documentation

Finance sector

Transaction systems, payment platforms, legacy core banking: comprehensive documentation for audits, regulatory compliance (KNF, DORA) and business continuity

Insurance

Rapid onboarding in environments with high staff turnover and systems that have been integrated over many years

Telecomunnication

Telecom operators with billing and CRM systems developed over many years

Industry and manufacturing

Manufacturers using MES or SCADA systems, or their own production planning solutions

Logistics

Logistics operators with parcel tracking and fleet management systems

Retail

Large retail chains with their own warehouse management systems, ERP systems or e-commerce platforms

Financial-Grade Security

Designed with security and enterprise infrastructure in mind

Your data stays with you. Always

S*.doc runs in a Kubernetes or Docker environment – on the customer’s infrastructure, not in the provider’s cloud. The source data never leaves your environment.

Local LLM models are the foundation of S*.doc, giving banks full control over their data. The solution meets the highest security standards, as confirmed by deployments in highly regulated environments.

Component

Details

Deployment

Kubernetes with a central orchestrator and a set of AI agents

Dostęp do kodu

XXX

LLM models

Bifrost proxy layer – support for cloud and on-premises models

Interface

Web-based panel for configuring, viewing and downloading documentation

On-premises installation

On-premises deployment – on your Kubernetes infrastructure

Local LLM models

Support for local LLM models – the source code remains within the environment

Banking standards

Configuration compliant with security and network communication policies for banking environments

The GitLab ecosystem

Integration with GitLab without exporting data to external services

4 steps to documentation

Implementation in four steps.
No hassle, no months of setup

Deployment in four steps. No chaos, no months of configuration

S*.doc is deployed directly within the client’s infrastructure, with full customisation to meet the requirements of the environment – including banking regulations and network security policies.

Phase I – Implementation and configuration of the environment

Before the developers start analysing the code, we agree together on what the documentation should look like and who it is intended for.

At this stage, the system goes live. The agents analyse the code, generate documentation and compare the options – so that they can choose the one that works best for your system.

Scope of work

Result:

consistent, well-organised documentation and a final configuration of the model and prompts ready for production

Before going into production, the documentation undergoes a comprehensive quality assessment. We don’t just deliver something that ‘looks good’ – we check that it actually works.

FAQ

Frequently asked questions

Answers to the questions we hear most often –

before and after implementation.

Answers to the questions we hear most often – before and after implementation.

Was the documentation generated entirely using AI?

Yes, the documentation was generated entirely by AI; however, we operate on a ‘human-in-the-loop’ model, which means that the final product is checked by our experts.

Yes. It is one of the elements of our process.

We are currently using Gemini 2.5, but we are also experimenting with on-premises models – including Gemini 3.1 and Gemma 4 as a local model.

The multi-agent approach significantly reduces the risk of discrepancies. A dedicated agent verifies the documentation once it has been generated and produces a report for the operator, who then double-checks all the comments raised.

At present, the solution is designed for creating documentation from scratch, but we are working to ensure that it will also support an incremental approach in the future.

We currently use Elastic and Postgres running on Finture’s private cloud.

Free consultation

Don’t make a decision about legacy system,
which you don’t quite understand

S*doc provides your team with documentation – before staff turnover, an audit or a modernisation project reveals any gaps. Get in touch with us to find out what we can do for your system.

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Report created in cooperation with

From technical debt
to greater business agility

Effective modernization of legacy systems in practice

Poznaj realia długu technologicznego w polskich firmach
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Dowiedz się w jaki sposób najlepiej podejść do modernizacji rozwiązań typu legacy