This document is an introduction to account planning presented by Ross Cidlowski. It discusses the history and role of account planning, which was invented in the 1960s to bridge research and strategy. Planners wear many hats including as explorers, storytellers, researchers and more. Their role is to ensure advertising work will actually be effective by developing insights and strategies, inspiring creatives, selling the work, and measuring impact. The document provides examples of how planners contribute and advises those working with planners to give them time and space to think, bring ideas every day, and not fear failure.