Benefits to the Requirements Analysts
CbyP helps requirements analysts clarify their mind regarding where to start, what to do, and what to deliver. It becomes clear with subjective certainty of what questions to ask at what time and when to finish.

By adopting the methodology, requirements analysts define requirements systematically, create precise and complete documentations in orderly fashion, and accordingly avoid analysis paralysis. The documentation is consistent, complete, and independent and contains all the information needed by designers. When the deliverables are produced, analysts’ job is done.

Benefits to the Business Stakeholders
By following CbyB process, business stakeholders speak their own languages to communicate to analysts and communicate clearly and completely. They are able to answer questions they know before answering questions that are to be invented. This will increase mutual understanding and enhance relationships. With the help of analysts, they are able to communicate precisely and completely what business needs are impossible otherwise.

Benefits to the Designers
Within the CbyP framework, requirements models do not look at design models, therefore designers do not worry about requirements change and are able to design the right thing right at the right time.

Using domain model, the conceptual model in the problem domain, CbyP bridges the chasm between problem space and solution space. Domain model is the technological explanation that explans how functional requirements are represented in terms of program structure. Business stakeholders are able to explan (by using the domain model) in terms of requirements models and designers are able to explain the dmain model in terms of physical structure, the architecture models of the system under development. Accordingly business stakeholders communicate what business needs are and designers communicate what IT shall deliver and communicate precisely and completely.

Benefits to the Management
CbyP helps identify tasks, roles, and deliverables that allow managers allocate resources effectively, estimate time accurately and monitor progress against explicit deliverables.

Managers are able to bring in right skills at the right time, maximally utilizing resources. This is in contrast to bring 20 developers on board all of sudden when they are not ready for.

Work breakdown structure is separated from product structure and this separation allows either the flexibility to change.

Benefits to the Firm
Competitive edge to satisfy customer needs better than competitors, continuously increase customer loyalty, and attract new customers. Time to market, another competitive edge, is shortened since, requirements change, iterations and rework are dramatically reduced.

Higher profit by slashing down development cost by 25% or more. CbyP maximizes the coverage of the application or customer domain, hence maximally satisfies customer needs to attract new customers and more product sales.

Generic methodology allows firms continuous improve by accumulate learning through harvesting individuals’ knoweldge into procedures and work product templates.