Architecture Definition(s): The structure of a system or IT service, including the relationships of components to each other and to the environment they are in. Architecture also includes the standards
ITIL
Application Portfolio Definition(s): A database or structured document used to manage applications throughout their lifecycle. The application portfolio contains key attributes of all applications. The application portfolio is sometimes implemented
Application Management Definition(s): The function responsible for managing applications throughout their lifecycle. Source: ITIL
Business Process Definition(s): A process that is owned and carried out by the business. A business process contributes to the delivery of a product or service to a business customer.