You can integrate the web booking interface for your employees into Atlassian Confluence. This could be beneficially if you're already using Confluence in your organisation for collaboration. As organising common spaces for real-life collaboration is an essential part of this, Seatsurfing is also available as a Confluence App.
Using the Confluence App requires the Seatsurfing backend to be up and running. It's not a replacement for it, but an additional frontend.
Confluence Data Center