SDIA — Semantic Domain Integration Architecture Taxonomy, Ontology, and Metamodel of a Vendor-Agnostic Semantic Integration Architecture — v3.0 FINAL Zenodo: 10.5281/zenodo.18877635🔗 https://zenodo.org/record/18877635 SDIA is the umbrella architecture of the DEIP ecosystem. It defines the taxonomy, ontology, and implicit metamodel that govern how domain semantics are preserved across five layers: gateway (GDCR), resolution (DDCR), orchestration (ODCP), events (EDCP), and data (DDCP). This is not a collection of acronyms. It is a unified model for end-to-end semantic continuity. What SDIA provides: ↳ Taxonomy — classification of architectural elements (Domain, Entity, Action, Target, Capability, Flow, Event, Table, Credential)↳ Ontology — meaning and valid relationships between classes↳ Metamodel — minimum structural grammar for modeling↳ Five-layer architecture — from facade to data, same domain token unchanged↳ Architectural invariants — domain as primary key, semantic continuity, deterministic resolution, vendor-agnostic The core proposition: the same human-readable intent survives, without distortion, from entry point to execution and onward to event propagation. This is the FINAL version of SDIA. The taxonomy, ontology, and metamodel are consolidated. No further structural updates are planned. Author: Ricardo Luz Holanda Viana · ORCID: 0009-0009-9549-5862Repository: github.com/rhviana/deipDEIP Ecosystem DOI: 10.5281/zenodo.19004802License: CC BY 4.0 Citation: Viana, R. L. H. (2026). Semantic Domain Integration Architecture (SDIA) — Version 3.0. Zenodo. https://doi.org/10.5281/zenodo.18877635 The domain is the map. The technology is the territory. A map that matches the territory never lies. 👁️