The document discusses creating interactive, collaborative online maps for community planning using the Google Maps application programming interface (API). It provides examples of maps created for a National low impact development atlas, Connecticut bike routes, and Milford road closures. It explains that the Google Maps API allows flexible and customizable mapping through programming, and highlights resources for using the API, including various techniques for making maps and obtaining help. The document demonstrates the National LID Atlas, which was created as a collaborative resource using the Google Maps API, a MySQL database, and programming.