🗺 Enterprise Architecture
System landscape and data flow diagrams, one per L1 domain. Every node is a
system or facility that resolves to a sourced entry in
registries/systems.json. Every diagram renders at 4K — click to zoom.
EA-01 — Service Design & Network Planning Architecture
System landscape and data flows across Service Design & Network Planning for a US Class I freight railroad, Union Pacific archetype
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EA-02 — Dispatching & Train Movement Architecture
System landscape and data flows across Dispatching & Train Movement for a US Class I freight railroad, Union Pacific archetype
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EA-03 — Terminal & Yard Operations Architecture
System landscape and data flows across Terminal & Yard Operations for a US Class I freight railroad, Union Pacific archetype
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EA-04 — Crew Management Architecture
System landscape and data flows across Crew Management for a US Class I freight railroad, Union Pacific archetype
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EA-05 — Mechanical & Rolling Stock Architecture
System landscape and data flows across Mechanical & Rolling Stock for a US Class I freight railroad, Union Pacific archetype
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EA-06 — Engineering: Track, Structures & Signals Architecture
System landscape and data flows across Engineering: Track, Structures & Signals for a US Class I freight railroad, Union Pacific archetype
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EA-07 — Safety & Regulatory Compliance Architecture
System landscape and data flows across Safety & Regulatory Compliance for a US Class I freight railroad, Union Pacific archetype
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EA-08 — Hazardous Materials & Environmental Architecture
System landscape and data flows across Hazardous Materials & Environmental for a US Class I freight railroad, Union Pacific archetype
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EA-09 — Intermodal & Automotive Operations Architecture
System landscape and data flows across Intermodal & Automotive Operations for a US Class I freight railroad, Union Pacific archetype
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EA-10 — Commercial, Pricing & Customer Service Architecture
System landscape and data flows across Commercial, Pricing & Customer Service for a US Class I freight railroad, Union Pacific archetype
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EA-11 — Interline, Equipment & Car Management Architecture
System landscape and data flows across Interline, Equipment & Car Management for a US Class I freight railroad, Union Pacific archetype
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EA-12 — Technology, Data & Cybersecurity Architecture
System landscape and data flows across Technology, Data & Cybersecurity for a US Class I freight railroad, Union Pacific archetype
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EA-13 — Finance, Revenue Accounting & Procurement Architecture
System landscape and data flows across Finance, Revenue Accounting & Procurement for a US Class I freight railroad, Union Pacific archetype
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EA-14 — HR, Labor Relations & Training Architecture
System landscape and data flows across HR, Labor Relations & Training for a US Class I freight railroad, Union Pacific archetype
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EA-15 — Merger & Network Integration Architecture
System landscape and data flows across Merger & Network Integration for a US Class I freight railroad, Union Pacific archetype
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