YouTube builds businesses by helping companies drive sales, spark word of mouth, grow repeat customers, and get their name out through online video advertising. Specifically, Google's AdWords for video platform allows advertisers to create video campaigns on YouTube and reach targeted audiences in a cost-effective way by only paying when viewers choose to watch an ad. It provides features like in-stream, in-slate, in-search, and in-display formats with comprehensive targeting options to help advertisers easily get started.