Develop a backend-only multivendor e-commerce platform, leveraging modern backend technologies. This platform will provide comprehensive APIs for all necessary operations, allowing flexibility for integration with various front-ends (web, mobile).

This a webpage that returns the stats of the player from the mobile game Clash Royale. This webpage displays the stats and the chest cycle of the players according to the valid player tag provided as an input by the user. This website uses the concept of REST APIs where axios a npm package in node.js is used to send http requests to the API.

"User Management System: Node.js Backend with MySQL Database"