Parameter Tree:
EARTH SCIENCE SERVICES > DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS

Definition:
Web-Based Geographic Information Systems (GIS) are defined as Data Analysis and Visualization Services designed for use on the web. These services include GIS map viewers, GIS web services, GIS applications, and software tools specifically used for creating GIS applications for the web.

Reference:
Environmental Systems Research Institute (ESRI)