The VAT4SME partial solution model aims to support Member States in building their own national solutions by providing a partial solution IT architecture model which public administrations need to finalize, assuring interoperability between public services. This document provides a summary diagram from a legal, organisational, semantic, and technical (application and infrastructure) perspective (views/ diagrams) to be implemented in your solution model, as well as implementation guidelines to facilitate understanding and the transposition of the VAT4SME architecture model by national public authorities.