The motivation to use CBSE arises from two concepts: one, reusable code and architecture and two, design that can save the costs  of development and that can ensure quality of the software product. CBSE also reduces development time and helps to maintain the software in the shortest possible time. It emphasizes the design and development of software systems using reusable software components. The reason for this is that many software products or solutions within a domain or even across domains have sufficient commonality in terms of basic processes tasks, trisection and so on. The contents of these entities are only domain-specific. This being the case, when we are using object technology we can develop reusable classes-objects called components for use in many other systems. CBSE is more relevant when we have a challenge of building complex software systems as it relies on already developed and tested reusable component libraries to meet its requirement of components.

CBSE has two parallel activities, domain engineering and component-based development. In domain engineering, we explore applications to identify functions, features and data components to develop reusable components. On development, they are placed in component libraries. Note that identification of comment is from existing software applications, as they are tested and reliable. Some medication may be necessary to make it suitable as a candidate in the component library. The components from the library are suitable for reuse when the requirements and architecture of the current system are the same as that of a system form where the component is picked up. A note of caution is that the comment may not be a hundred per cent fit but may need minor modification to adapt to the new software.

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