Hiring an IIS developer can significantly improve your web-based projects. They specialize in managing Microsoft's Internet Information Services, a flexible, secure and manageable web server for hosting anything on the web. Their expertise includes setting up, configuring, and securing IIS servers, troubleshooting issues, and optimizing performance. Their knowledge can ensure the smooth running of your websites, applications, and services, enhancing the user experience. With skills in ASP.NET and other Microsoft technologies, they can also aid in creating robust, scalable applications. In essence, an IIS developer can provide comprehensive solutions for your web infrastructure needs.