One of the most powerful trends in today's business is the idea of breaking business processes and key competencies into combinations of applications and services that can be combined or re-used to create new services or improve products and services rapidly. This can be called Enterprise Refactoring. Internal and External Applications API Management Layer Service Layer One API Gateway Internal Apps Cioud Services Most organizations already have a plethora of applications and data that they use to produce the value they deliver to customers. Creating new APIs and services from them, requires making them available to developers and providing the tools to leverage them easily and quickly. Given this kind of refactoring arrangement in enterprise systems, explain how an engineer might keep track of the relationships between functional and non-functional requirements of a new internal/external application