System Context & Integration Architecture Diagram

**Description**

Analyze existing architecture, application, and integration documentation to create a Current-State Integration / System Context Diagram that provides a technical view and illustrating the relationships, dependencies, interfaces, integrations, and data flows between Mainframe, Legacy, and external systems, specific to the Mainframe entities.

The purpose is to establish a clear understanding of the current technical landscape and assess migration complexity, integration risks, and system impacts associated with future modernization efforts.

**Target audience**

- Technical teams
- Architect
- POs

**Business Value**

Modernization complexity is often driven by system dependencies and integrations rather than the core applications themselves. This diagram provides visibility into existing technical relationships and serves as a foundational artifact for impact analysis, migration planning, cost estimation, and risk assessment.

**Scope**

Document and visualize :

- [ ] Mainframe and Legacy platforms
- [ ] Applications specific to Mainframe entities
- [ ] Internal and external interfaces
- [ ] Data exchanges and data flows
- [ ] Batch processing dependencies
- [ ] Upstream and downstream systems
- [ ] External partner integrations
- [ ] System dependencies and integration patterns