interactive instruments is committed to the application and propagation of open standards. We are one of the leading contributors to the development of open standards for Spatial Data Infrastructures (SDI) and the integration of geographic information with other information on the web. Based on this foundation, we design and implement solutions for our customers and provide products for such solutions. XtraServer offers a configurable software suite for providing geographic information using open standards in a highly efficient way. XtraServer is also available as an ArcGIS for Server Extension. XtraProxy for WFS provides access to OGC Web Feature Services from ArcGIS clients and APIs.