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The RICE framework is a prioritization methodology created by Intercom that produces a score by combining four factors: Reach, Impact, Confidence, and Effort. It divides the product of the first three by the estimated effort in person-months, so it can compare unrelated initiatives using one objective number.
The Kano model classifies product features into three types: basics (what customers take for granted), performance (where more investment yields more satisfaction), and emotional delighters (unexpected extras that build loyalty). Knowing which category each feature belongs to sharpens every roadmap decision.
Design thinking is a user-centred problem-solving methodology structured around five iterative phases: empathise, define, ideate, prototype, and test. Following the Design Council Double Diamond model, it first identifies the right problem, then designs the right solution. Applicable to digital products, internal processes, and business models alike.
