Implementing a Domain Mapping and System Modernization Framework for Large-Scale E-Commerce Platforms

The client operates a multifaceted eCommerce platform with extensive services, integrations, and logistics components. Their existing documentation is outdated or incomplete, relying heavily on tribal knowledge maintained by domain experts, which hampers understanding and system modernization efforts. This situation slows down onboarding, impedes accurate feature development, and increases risk of misaligned functionalities.

A large eCommerce organization managing multiple warehouses, web applications, and logistics operations, seeking to modernize and optimize their complex system architecture.

• Create accurate, high-level system architecture diagrams to facilitate understanding among technical and non-technical stakeholders.
• Reduce onboarding and knowledge transfer time by establishing clear visual documentation of system components and relationships.
• Support ongoing modernization efforts by providing detailed maps of system contexts and containers, enabling targeted updates and upgrades.
• Enhance collaboration with domain experts through iterative diagram revisions, improving the fidelity of system understanding.
• Lay the groundwork for deeper domain analysis such as event-driven modeling or process optimization.

• Generation of high-level C4 Context diagrams representing external systems, actors, and overall system scope.
• Creation of detailed Container-level diagrams illustrating internal components, services, and their relationships.
• Ability for domain experts to review, suggest modifications, and collaboratively revise diagrams in real-time.
• Support for Diagram as Code approach to enable version control, easy updates, and integration into continuous documentation workflows.
• Tools for mapping personas, systems, entry points, relationships, and key interactions across multiple levels.
• Facilitation of downstream activities such as event storming based on the established diagrams.

• Existing documentation repositories and system specifications
• Live collaboration tools to allow real-time diagram reviews
• Version control systems for maintaining diagram code
• Knowledge management systems for capturing updates from domain experts

• Diagram rendering performance suitable for real-time collaboration with minimal latency
• Scalability to handle mapping of large, complex domains with numerous components
• Security measures to protect sensitive architectural information during collaborative sessions
• Maintainability through clear, versioned Diagram as Code artifacts

The project aims to significantly improve system comprehension and documentation quality, reducing onboarding time and facilitating more accurate modernization initiatives. Expected outcomes include faster decision-making, improved collaboration among technical and business teams, and a more resilient, adaptable system architecture that supports ongoing growth and integration efforts.