Logical Architecture

Logical architecture specifies services, modules, data structures, and interfaces in technology-neutral terms. It captures required behavior and partitioning decisions that physical architecture later maps to products and deployment topologies. Logical design is where most NFR and integration constraints take shape.

In Practice

Larkinized LLC validates logical architecture against principles and canonical data models before vendor selection locks in constraints. Logical artifacts support impact analysis when capabilities or regulations change. Solution architects maintain traceability from logical components to work package deliverables.

Example

A logical architecture defines order capture, validation, and fulfillment services with explicit data handoffs before cloud vendor selection.