A pitch deck is a visual presentation used by entrepreneurs to communicate their business idea to potential investors. Typically consisting of around 10-20 slides, it highlights key aspects such as the business model, market opportunity, competitive landscape, and financial projections. The goal is to persuade investors to provide funding or support. Pitch decks are often used in startup environments, especially during events like venture capital meetings or startup competitions. They serve as a concise tool to convey essential information and engage the audience, making it easier for investors to understand the value proposition and potential of the business.