Architecture description process includes the following main activities: * Analyse the problem situation (purpose, scope and objectives), * Identify the stakeholders, their concerns and needs, * Formalize and classify key requirements from collected needs, * Identify the potential solutions, * Identify architecture viewpoints according to stakeholders’ concerns, * Develop models and views of candidate architectures from these viewpoints, * Provide the rationale of the potential solutions with regard of requirements and motivation data. In particular, ensure their traceability to motivation data, * Review architecture candidates with stakeholders and get their approval, and * State relations between candidate architectures and design and other downstream activities.