---
date: July 2025
title: "![arc42](images/arc42-logo.png) Template"
---

# 

**About arc42**

arc42, the template for documentation of software and system
architecture.

Template Version 9.0-EN. (based upon AsciiDoc version), July 2025

Created, maintained and © by Dr. Peter Hruschka, Dr. Gernot Starke and
contributors. See <https://arc42.org>.

# Introduction and Goals {#section-introduction-and-goals}

## Requirements Overview {#_requirements_overview}

## Quality Goals {#_quality_goals}

## Stakeholders {#_stakeholders}

+-------------+---------------------------+---------------------------+
| Role/Name   | Contact                   | Expectations              |
+=============+===========================+===========================+
| *           | *\<Contact-1\>*           | *\<Expectation-1\>*       |
| \<Role-1\>* |                           |                           |
+-------------+---------------------------+---------------------------+
| *           | *\<Contact-2\>*           | *\<Expectation-2\>*       |
| \<Role-2\>* |                           |                           |
+-------------+---------------------------+---------------------------+

# Architecture Constraints {#section-architecture-constraints}

# Context and Scope {#section-context-and-scope}

## Business Context {#_business_context}

**\<Diagram or Table\>**

**\<optionally: Explanation of external domain interfaces\>**

## Technical Context {#_technical_context}

**\<Diagram or Table\>**

**\<optionally: Explanation of technical interfaces\>**

**\<Mapping Input/Output to Channels\>**

# Solution Strategy {#section-solution-strategy}

# Building Block View {#section-building-block-view}

## Whitebox Overall System {#_whitebox_overall_system}

***\<Overview Diagram\>***

Motivation

:   *\<text explanation\>*

Contained Building Blocks

:   *\<Description of contained building block (black boxes)\>*

Important Interfaces

:   *\<Description of important interfaces\>*

### \<Name black box 1\> {#_name_black_box_1}

*\<Purpose/Responsibility\>*

*\<Interface(s)\>*

*\<(Optional) Quality/Performance Characteristics\>*

*\<(Optional) Directory/File Location\>*

*\<(Optional) Fulfilled Requirements\>*

*\<(optional) Open Issues/Problems/Risks\>*

### \<Name black box 2\> {#_name_black_box_2}

*\<black box template\>*

### \<Name black box n\> {#_name_black_box_n}

*\<black box template\>*

### \<Name interface 1\> {#_name_interface_1}

...​

### \<Name interface m\> {#_name_interface_m}

## Level 2 {#_level_2}

### White Box *\<building block 1\>* {#_white_box_building_block_1}

*\<white box template\>*

### White Box *\<building block 2\>* {#_white_box_building_block_2}

*\<white box template\>*

...​

### White Box *\<building block m\>* {#_white_box_building_block_m}

*\<white box template\>*

## Level 3 {#_level_3}

### White Box \<\_building block x.1\_\> {#_white_box_building_block_x_1}

*\<white box template\>*

### White Box \<\_building block x.2\_\> {#_white_box_building_block_x_2}

*\<white box template\>*

### White Box \<\_building block y.1\_\> {#_white_box_building_block_y_1}

*\<white box template\>*

# Runtime View {#section-runtime-view}

## \<Runtime Scenario 1\> {#_runtime_scenario_1}

-   *\<insert runtime diagram or textual description of the scenario\>*

-   *\<insert description of the notable aspects of the interactions
    between the building block instances depicted in this diagram.\>*

## \<Runtime Scenario 2\> {#_runtime_scenario_2}

## ...​

## \<Runtime Scenario n\> {#_runtime_scenario_n}

# Deployment View {#section-deployment-view}

## Infrastructure Level 1 {#_infrastructure_level_1}

***\<Overview Diagram\>***

Motivation

:   *\<explanation in text form\>*

Quality and/or Performance Features

:   *\<explanation in text form\>*

Mapping of Building Blocks to Infrastructure

:   *\<description of the mapping\>*

## Infrastructure Level 2 {#_infrastructure_level_2}

### *\<Infrastructure Element 1\>* {#_infrastructure_element_1}

*\<diagram + explanation\>*

### *\<Infrastructure Element 2\>* {#_infrastructure_element_2}

*\<diagram + explanation\>*

...​

### *\<Infrastructure Element n\>* {#_infrastructure_element_n}

*\<diagram + explanation\>*

# Cross-cutting Concepts {#section-concepts}

## *\<Concept 1\>* {#_concept_1}

*\<explanation\>*

## *\<Concept 2\>* {#_concept_2}

*\<explanation\>*

...​

## *\<Concept n\>* {#_concept_n}

*\<explanation\>*

# Architecture Decisions {#section-design-decisions}

# Quality Requirements {#section-quality-scenarios}

## Quality Requirements Overview {#_quality_requirements_overview}

## Quality Scenarios {#_quality_scenarios}

# Risks and Technical Debts {#section-technical-risks}

# Glossary {#section-glossary}

+----------------------+-----------------------------------------------+
| Term                 | Definition                                    |
+======================+===============================================+
| *\<Term-1\>*         | *\<definition-1\>*                            |
+----------------------+-----------------------------------------------+
| *\<Term-2\>*         | *\<definition-2\>*                            |
+----------------------+-----------------------------------------------+