A design-led, week-long sprint phase in Present Forward: A Five-Phase Process for Problem-Focused Strategy whose goal is explicitly NOT to decide which features to build, but to generate illustrative concepts and mocks that make each strategic pillar tangible enough to include in the strategy doc. Design/UXR receive the pillars and their How Might We / Fertile Questions and choose their own sprint format; the resulting mocks get embedded into the Strategy Doc Template (Present Forward), one per pillar.
Two named external sprint formats are cited as options rather than a single prescribed method:
Which flavor to run depends on whether the open question is 'what should this look like' (GV Design Sprint) or 'who exactly is this for' (Bullseye Sprint).