This document discusses factors to consider when choosing between an in-house or external advertising agency. It outlines the benefits and challenges of each option, as well as factors that influence the choice such as account size, media spend, complexity, and creativity needs. The document also provides an overview of the types of external agencies and recommends a process for selecting an agency that includes setting goals, defining selection criteria, requesting references and creative pitches, and ultimately selecting the agency. It concludes with a brief discussion of advertising goals and the purpose of a creative brief.