A survey told Intuit that half of Quicken's users were businesses. Only going to watch them explained why, and the answer became QuickBooks. A case study in contextual inquiry for product managers.

Opening an API commits you to access, stability and economics that outlast the team that shipped it. What Reddit, Twitter, Slack and Stripe show about API platform strategy, and five questions to...

Performance ratings are settled in calibration meetings, where your manager gets about two minutes and the rater's habits outweigh your actual work. Seven things that happen to a product manager's...

Low usage tells you who will notice a removed feature, not how loudly. What Google Reader, Heroku, Twitter and Atlassian show about notice periods, and the sunset sequence that keeps stakeholders on...

Each extra nine of availability can cost far more than the last, and the target quietly decides how often your team ships. Here is how product managers can use an error budget to set a realistic...

AI-generated personas are fast and free, and the research comparing them to real participants keeps finding the same flaws: less variance, idealized behavior, flattened segments and a strong urge to...