Agile methodologies are a set of principles and practices that are used to manage and deliver complex projects in a flexible and iterative way. I use agile methodologies in my design process by following the Agile Manifesto and the principles of the Scrum framework. This means that I focus on delivering value to the user and the business, and that I embrace change and continuous improvement. I use techniques such as sprints, stand-ups, and retrospectives to manage my work and track progress, and I make sure to regularly communicate with stakeholders and gather feedback to ensure that the design meets the needs of the user and the business.