Affinity Mapping Synthesis

Affinity mapping is a structured way to make sense of qualitative research data. You gather insights from interviews, observations, or surveys, write each insight on a card (or digital equivalent), then cluster similar cards together. Out of the clusters emerge themes, which then inform product decisions. It's sometimes called "affinity diagramming" or "thematic clustering." The process is visual and collaborative: your team sits around a table (or Zoom) and collectively decides which insights belong together. Done well, affinity mapping turns 20 hours of raw interview transcripts into 5-7 clear, actionable themes in 3-4 hours.