STS Server Back-end and Web: Discuss server-side development, web integration, and technical issues related to STS Server's back-end and web applications."

Alternatively, you could also use:

• "Share knowledge, ask questions, and collaborate on STS Server's back-end development, web services, and related technical topics."
• "STS Server's back-end and web development discussions: API integration, server configuration, web application development, and more.