How do process models differ from one another?

Process models differ primarily in their structure, purpose, and application. Some models focus on sequential steps, like the Waterfall model, which emphasizes a linear progression, while others, like Agile, prioritize iterative development and flexibility. Additionally, certain models may be tailored for specific industries or types of projects, impacting their complexity and tools used. Ultimately, the choice of a process model depends on project requirements, team dynamics, and desired outcomes.