At a recent federal/industry roundtable discussion, Greg Godbout, former director of 18F Consulting, suggested that user experience can be incorporated into agile development through the use of something called a Discovery Sprint. GSA's boutique agile shop provides this service as one of the short-term offerings on its menu. Now called a Design Sprint, following Google Venture's model, its purpose is "…to assess your team's or organization's readiness, understand your customers and their needs, brainstorm ideas, and provide guiding principles and recommendations to move forward."
This advice reflects an understanding that, for all its strengths, one of agile’s downsides is that it’s not a user centered method. Agile scrum is optimized for rapid development and release of working code. It’s not optimized to make products that will get adopted by end users.