GOOD UX IS STILL IMPORTANT EVEN WHEN USERS ARE FORCED TO USE YOUR SOFTWARE

Summary from the TLDR Design newsletter

Designing internal applications presents unique challenges, as users are often required to use the software, making traditional metrics such as user retention irrelevant for measuring design impact. The CASTLE framework addresses this by tracking six key areas—Cognitive Load, Advanced Feature Usage, Satisfaction, Task Efficiency, Learnability, and Errors—that directly connect to business concerns, such as employee productivity, training costs, and software ROI. Designers can demonstrate their value by aligning CASTLE metrics with existing business goals, prioritizing relevant measurements based on specific problems, and gathering data through methods like user testing, support tickets, and pulse surveys.