This project is about developing the back-end of a web application, using Google App Engine Endpoints API, which allows both web and mobile clients to create, read, update and delete (CRUD) data on the server.
Udacity provided the front-end web interface and a minimum set of back-end features. Students then had to add features and solve a query problem that isn't simple when using Google's Cloud Datastore.
The GitHub repository for this project can be found here: GitHub project repository. The Readme file there explains what features have been added, my design and how I solved some query problems that were set by Udacity.
The front-end is currently being served on Google App Engine at the following URL: https://my-conference-app-1145.appspot.com
To access the back-end functionality I've added, you can use the Google API Explorer for the app here: https://apis-explorer.appspot.com/apis-explorer/?base=https://my-conference-app-1145.appspot.com/_ah%2Fapi#p/conference/v1/
To experiment with all the API functions, you'll first need to login to the front-end part of the app using a Google+ account.