Technical Architecture (TA) aims to translate the proposed solution of the Solution Architects into an integrated system and provide in-depth technological insight on matters like hardware and software specifics.

Solution Architecture (SA) aims to define a specific solution, combining guidance from different enterprise architecture viewpoints (business, information and technical), as well as from the enterprise solution architecture (ESA).

Enterprise Architecture (EA) aims at optimising legacy or fragmented processes, information and technology into an integrated environment that facilitates easy decision making and change implementation.

An application architecture is a structural map of how an organisations software applications are assembled and how those applications interact with each other to meet business or user requirements.