What are functional requirements in the context of product realization?

Functional requirements are essential in the product realization process as they define the specific behaviors, functionalities, and capabilities that a product must possess to satisfy its intended users. These requirements articulate what the product should do in terms of tasks and services, thereby ensuring that all aspects of user needs are met effectively. By focusing on user needs, functional requirements guide the design and development phases, influencing decisions on everything from features to performance.

This distinction is important because it centralizes the design process around real-world applications and user experiences. In contrast to other aspects that might relate to compliance, market viability, or budget management, functional requirements directly align with the core purpose of creating a product that serves its users and fulfills their expectations.