Rome, a global business hub in ancient times, integrated marketplaces into its infrastructure, which are still prevalent today in both physical and online forms. Modern examples of successful ecommerce marketplace platforms include Etsy, eBay, Airbnb, Alibaba, Amazon, and Fiverr. To create an online marketplace business, entrepreneurs should start with a solid master plan, understand their target audience, research competitors, choose the right platform (custom-built or SaaS), focus on user experience design, attract quality sellers, and implement features such as advanced search functionality, secure payment systems, and efficient customer support.