Let’s briefly overview the issue of how to create a marketplace platform and start with the basics. An eCommerce two-sided platform is called a marketplace. In its essence, it’s a website, a meeting point for multiple sellers and buyers through which they communicate and perform the deals as a single intermediary. 

It is not to be confused with online stores and price aggregators that show prices from various commercial sites for some fee. Also, there are different kinds of marketplaces, and your choice influences the business model and vice versa. 

With marketplaces, the biggest challenge will be not the development but business idea validation. And here we start with niche research, who is your target audience, the business model, and many other marketing things. Once you are done with this, the development will be based on business functional requirements resulting from your previous research and findings.