An Accelerator is a program designed to support early-stage startups through mentorship, resources, and funding. These programs typically last a few months and culminate in a demo day where startups pitch their ideas to investors. The goal is to help entrepreneurs refine their business models and accelerate their growth. Accelerators often provide a structured curriculum, networking opportunities, and access to a community of like-minded entrepreneurs. Notable examples include Y Combinator and Techstars, which have helped launch many successful companies. By participating in an accelerator, startups can gain valuable insights and connections that can significantly enhance their chances of success.