Susan Wojcicki, Vice President of Product Management at Google, announced changes in business models and technology during the IAB Annual Leadership Meeting 2010 in Carlsbad, Calif.

Google on Monday launched an updated online ad-serving technology platform for publishers, which incorporates more of the DoubleClick ad exchange it acquired in 2008.

The next generation, DoubleClick for Publishers (DFP) will be launched in two versions: a pay version for larger publishers that demands more options, and a free version for smaller publishers with simple needs that replaces Google Ad Manager.

This enhanced version of DFP offers publishers a latest way to serve ads. The completely redesigned interface aims to save time and reduce errors.

In addition, the platform offers an open public API that facilitates publishers to develop and integrate their own apps with DFP or integrate those formed for DFP by third-party developers. Applications under development include sales, order management and workflow tools.

The latest version of DFP also enables Google work closer with the DoubleClick Ad Exchange that officially launched in 2009. Publishers will be granted access to the updates this year as features roll out.