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Entity Abstraction (Erl)

How can agnostic business logic be separated, reused, and governed independently?

Entity Abstraction


Bundling both process-agnostic and process-specific business logic into the same service eventually results in the creation of redundant agnostic business logic across multiple services.


An agnostic business service layer can be established, dedicated to services that base their functional context on existing business entities.


Entity service contexts are derived from business entity models and then establish a logical layer that is modeled during the analysis phase.


The core, business-centric nature of the services introduced by this pattern require extra modeling and design attention and their governance requirements can impose dramatic organizational changes.


Inventory, Composition, Service

A layer of entity services, each of which encapsulates processing associated with a specific business entity (or a group of related entities). SOA Certified Professional (SOACP) Module 4: Fundamental SOA Analysis & Modeling with Services & Microservices

This pattern is covered in SOACP Module 4: Fundamental SOA Analysis & Modeling with Services & Microservices.

For more information regarding the SOA Certified Pofessional (SOACP) curriculum,

SOA Design Patterns

This page contains excerpts from:

SOA Design Patterns by Thomas Erl

(ISBN: 0136135161, Hardcover, Full-Color, 400+ Illustrations, 865 pages)

For more information about this book, visit