This week Google released the latest version of the AdWords API v2009 to all advertisers after releasing it to a limited group back in June.

The new version offers users some new features, and Google says it comes with greater speed at a lower cost. Because it offers nearly all of the campaign management functionality youre used to from the AdWords API, along with a new rate sheet representing lower costs, now is a great time to start developing for v2009, says John Fitzpatrick of Googles AdWords API Team. Documentation for the new version of the API can be found here. There is also a sandbox available where developers can experiment and test.