Recently Unilever challenged Procter & Gamble to prove their advertising claim that P&G’s Fairy brand of washing-up liquid lasted twice as long as Unilever’s Persil brand. The result that followed provides a great lesson for deciding how to pick your battles.

One of the challenges of being a product manager is that it’s sometimes difficult to read between the lines of what your (potential) customers want in order to determine what they actually need. This article explains how to identify and differentiate between needs, features and benefits.