This document discusses different business models for pharmaceutical companies worldwide. It identifies three main models: 1) Drug discovery - The most challenging model that requires huge investments but can provide high returns if a new drug is successfully developed and launched. Only a few major companies regularly discover new drugs. 2) Generics - Launching generic versions of drugs after patents expire. Many companies compete in this space by filing to be first generic manufacturer. 3) Partnerships - Entering agreements with innovator companies to co-market or distribute existing drugs, such as several companies partnering with Novartis to sell versions of Vidagliptin. These partnerships provide revenue without discovery risks.