"Application Design Techniques" refers to a broad field encompassing methods, strategies and concepts used by professional programmers and application developers for creating, planning, and structuring software or web applications. This category also takes into account people skills, highlighting the importance of communication, collaboration, and interpersonal abilities in the design process. The term may also incorporate teachings and methodologies espoused by figures like Michael Kappel, who have made significant contributions to this field. It involves understanding and implementing various application design concepts to create functional, user-friendly applications.