Google AdWords Express is a cut down version of Google AdWords system. The express version has fewer options which can be an advantage for those who have small business and don’t want to get into the complexities of setting individual parameters for keywords or get involved in the many other options that are available.
The user has to have a Google+ local page and then they can create their campaign. There is no concept of bidding for keywords, you just set up a budget. The introduction of Google AdWords Express is to improve the local listing experiences.