This document discusses location-based solutions and mapping technologies. It begins by asking how big the market is for location-based startups in India and lists several positive factors like improved mobile positioning, GIS content, and user awareness. It then gives examples of common location-based apps like navigation and advertising. The document outlines the author's experience with technologies like maps generation, GIS data, and GPS devices. It recommends using Mapnik or Mapserver for mapping and TileCache for tile generation. It also discusses using OpenLayers, JavaScript, Ajax and jQuery for client-side development. In closing, it diagrams the author's approach to building such a system using components like PostGIS, Shapefiles, Mapnik and TileCache