---
title: "Modules | OpenEPCIS Docs | OpenEPCIS - an open-core, GS1-compliant EPCIS implementation."
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last_updated: "2026-06-28T23:26:21.734Z"
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  description: "Seven module families that organise the OpenEPCIS platform — Resolver, Masterdata, EPCIS Events, Formats & Validation, Integration, Testdata, Platform."
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# **Modules** Seven module families that organise the OpenEPCIS platform — Resolver, Masterdata, EPCIS Events, Formats & Validation, Integration, Testdata, Platform.1 min read The OpenEPCIS platform is organised into seven module families. Each family has its own page describing what it does, what's non-obvious about it, and the capabilities it ships in each edition. | **#** | **Family** | **What it does** |
| --- | --- | --- | | 1 | [GS1 Conformant Resolver](https://openepcis.io/docs/platform-overview/modules/resolver) | The platform's front door for GS1 identifiers — a scan resolves to product information, masterdata, EPCIS endpoints, and twelve more GS1 link types. | | 2 | [GS1 Web Vocabulary & Masterdata](https://openepcis.io/docs/platform-overview/modules/masterdata) | The descriptive layer — who makes the product, where it's made, what regulations it meets, how it's described in GS1 Web Vocabulary. | | 3 | [EPCIS Events](https://openepcis.io/docs/platform-overview/modules/epcis-events) | EPCIS 2.0 capture, query, and live (non-polling) subscriptions. | | 4 | [Formats, Validation & Identity](https://openepcis.io/docs/platform-overview/modules/formats) | XML ↔ JSON-LD conversion (XSLT in OSS, SAX-streaming in Business), multi-layer validation, idempotent event hashing. | | 5 | [Integration & Gateways](https://openepcis.io/docs/platform-overview/modules/integration) | The perimeter — S3-compatible and Azure Blob storage, file service, AI assistant. | | 6 | [Testdata & Developer Tooling](https://openepcis.io/docs/platform-overview/modules/testdata) | Synthetic event generation, reference event collection, EPCIS REST conformance test suite, replay tool, multi-language SDK examples. | | 7 | [Platform, Build & Observability](https://openepcis.io/docs/platform-overview/modules/platform) | How OpenEPCIS is built (one version anchor, thirteen container images), deployed (Terraform / Helm or Ansible / Docker Compose), and observed (OpenTelemetry). | ## See also - [Feature matrix](https://openepcis.io/docs/platform-overview/feature-matrix) — capabilities by edition, grouped by these same seven families. - [Architecture](https://openepcis.io/docs/platform-overview/architecture) — the four cross-cutting concerns that shape every module. - [Roadmap](https://openepcis.io/docs/platform-overview/roadmap) — strategic next steps.