A startup pitch deck is a document that consists of a deck of slides and accompanying text that is used in presenting the company to potential investors. A startup pitch deck is a document that consists of a deck of slides and accompanying text that is used in presenting the company to potential investors. The pitch decks are typically created by marketing, sales, or business development professionals. Pitch decks vary considerably depending on the industry, but they generally contain information about the company's market size, competition, and product or service offerings. They also often include information about key personnel such as founders, management team members, board members and advisors.