Integration pattern

An integration pattern is a reusable, documented way of connecting systems or exchanging data between them. It describes how information should move, be transformed, and be synchronized across applications or layers (for example, between shop-floor OT systems, MES, ERP, PLM, QMS and data warehouses) without prescribing a specific vendor or product.

What an integration pattern includes

An integration pattern usually specifies:

• The participating systems or endpoints (for example, machine controllers, MES, ERP)
• The direction of data flow (one-way, bidirectional, event-driven, batch)
• The interaction style (such as request/response API, message queue, file-based, publish/subscribe)
• Data structures and mapping rules between source and target models
• Error handling, retries and basic resiliency behaviors
• Security boundaries at a conceptual level (for example, data that can cross from OT to IT)

In industrial and regulated environments, integration patterns are used to standardize how operational data like work orders, as-built genealogy, nonconformances, inspection results, or maintenance records flow between MES, ERP, PLM, QMS and other systems.

Common integration pattern types in manufacturing

• Point-to-point: A direct connection between two systems, such as MES calling an ERP API to release or close work orders.
• Message bus or publish/subscribe: Systems publish events (for example, operation complete, NC raised) to a bus; subscribers consume what they need.
• File-based batch: Scheduled exchange of files like CSV or XML for material master data, routings, or production results.
• API gateway / service layer: A standardized interface exposes plant functions (for example, dispatch, status, quality records) to other systems.
• Event-driven integration: Triggers based on events from machines or MES, such as automatically updating ERP inventory when a good quantity is reported.

How integration patterns are used operationally

Operations, IT and OT teams use integration patterns to:

• Design consistent ways to move orders, BOMs and routings from ERP/PLM into MES
• Standardize how quality events and inspection data are sent to QMS or data analytics platforms
• Define patterns for traceability flows, such as serial numbers and genealogy moving from shop floor to enterprise systems
• Document data interoperability approaches that can be reused across plants, programs or suppliers

Common confusion

• Integration pattern vs. integration implementation: A pattern is a general approach and design template. An implementation is a specific instance using particular tools, mappings and environments.
• Integration pattern vs. integration architecture: Architecture is the overall structure of how systems interact across an organization. Patterns are the individual building blocks or connection styles used within that architecture.