Solution Building Block

A solution building block is the implementation-level unit—software, hardware, or service—that delivers specified architecture behavior with defined interfaces and dependencies. Solution architects assemble SBBs into deployable configurations aligned to standards. Clear SBB boundaries simplify testing and ownership.

In Practice

Larkinized LLC maintains catalogs of approved SBBs mapped to TRM categories and reference architectures. New SBB introductions require ARB review when shared across programs. Decommission plans identify dependent ABBs and value streams affected.

Example

A standardized API gateway SBB implements cross-cutting security and routing for multiple microservice programs.