The Architecture · Documentation
Reference
The Architecture page is the public statement. Below: a sample MSA with its annexes - the organizational expression of the architectural principles - and a glossary that fixes the vocabulary.
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IT-Operations MSA - Sample
Sample managed service agreement between Manufacturing Operations and IT. The organizational expression of the architectural principles.
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Annex A - Network address allocations
Annex A to the sample MSA: network address allocations, per-zone subnetting, services at well-known offsets.
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Annex B - Interlock specifications
Annex B to the sample MSA: cross-network interlock specifications, signal mapping, RACI for interlock failures.
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Annex C - Troubleshooting runbook
Annex C to the sample MSA: troubleshooting runbook for the cross-boundary interface, who calls who, escalation paths.
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Annex D - Firewall config register
Annex D to the sample MSA: firewall configuration register, conduit-by-conduit rules, change control.
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Annex E - Switch families
Annex E to the sample MSA: switch family selection and standardization for the Manufacturing Operations side.
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Glossary
Vocabulary used across IIA documentation. Domain terms, architectural terms, the five principles, the three hard constraints, and the standards IIA aligns with.
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