What are the four categories identified in the CMMI model?

The four categories identified in the CMMI model are indeed Doing, Managing, Enabling, and Improving. These categories are essential as they represent the different levels of capability maturity that organizations can attain when implementing processes and practices outlined in CMMI.

Doing encompasses the actual execution of tasks and processes, focusing on how work is performed on the ground. Managing refers to the oversight and coordination of processes to ensure they align with organizational goals and standards. Enabling involves providing the necessary resources and conditions required to support effective process execution. Finally, Improving signifies the ongoing efforts made to enhance processes based on data analysis, feedback, and innovation.

Recognizing these categories can help organizations assess their capabilities and identify areas for development, ensuring that they can progress through the maturity levels effectively.