The architecture of the VBD-AIR tool. VBD-AIR adopts a three tier design: Web Server Tier, Data Server Tier and a Map Service Tier. The web interface follows AJAX standards. The web server implements a Model-View-Controller (MVC) framework. The data server is an SQL database, employed in a snow-flake structure and interpolated in the web server as data entities. The Web Mapping Services hosts the coverage file for predicted disease and vector distributions on a GeoServer. The base map service retrieves maps from Google and OpenStreetMap.