Cagan's four inputs feeding Product Strategy: customer insight, data, technology (e.g. generative AI), and industry trends. Prescription: build ongoing channels — regular customer conversations, data analysis, technology scouting, industry monitoring — to continuously feed strategic decisions, rather than treating any one of them as a one-off research exercise.
Cagan's keynote restates the same four sources feeding product strategy: customers, data, technology, and industry. See Product Strategy, Product Sense.
Cagan names the same four sources — customers, data, technology, and industry — in this keynote, explicitly citing generative AI as a current example under the technology source (staying deliberately current on what new technology like AI now makes possible, rather than only tracking customers/data/industry). He frames these four sources as the inputs that, sustained over months, produce Product Sense — reinforcing that insight-gathering isn't a one-time strategy exercise but an ongoing practice leaders must keep rotating through.