OGC Web Services, Phase 4 (OWS-4) was an Interoperability Initiative that advanced OGC technology in the following areas:
- Sensor Web Enablement (SWE)
- Geo Processing Workflow (GPW)
- Geo-Decision Support Services (GeoDSS)
- Geo-Digital Rights Management (GeoDRM)
- CAD / GIS / BIM (GCB)
- OGC Location Services (OpenLS)
- Compliance Testing (CITE)