Which approach focuses on delivering functionalities in narrow slices?

The correct approach that focuses on delivering functionalities in narrow slices is the Agile approach. This methodology is designed to promote flexibility, customer collaboration, and rapid delivery of value. In Agile, the development process is divided into small, manageable increments known as iterations or sprints. Each increment results in a functional piece of the product that can be reviewed and tested, allowing teams to incorporate feedback and make adjustments between cycles.

This focus on delivering small slices of functionality allows for greater adaptability to changes, immediate user feedback, and a more efficient process for enhancing and evolving the product based on actual user needs. Understanding this concept is crucial for effectively implementing Agile practices in a project setting.

The other approaches, although valuable in their own contexts, do not emphasize delivering functionalities in narrow slices to the same extent as the Agile approach. The incremental approach refers to adding new elements or functions gradually but does not inherently restrict the scope to narrow slices as Agile does. The predictive approach tends to follow a more linear, traditional project management style that often focuses on comprehensive upfront planning. The iterative approach involves repeated cycles of development but can vary in scope and does not specifically ensure that functionalities are delivered in narrow slices.