Google, the search unit of Alphabet (NASDAQ:GOOGL) (NASDAQ:GOOG), has struggled in recent years to boost uneven revenue growth.

While the company still rules the digital ad space, it has faced increasing competition from the likes of e-commerce giant Amazon.com(NASDAQ:AMZN) as well as from social media powerhouses like Facebook.

It detailed new ad products and new locations to place ads -- including the previously unfettered Google search page.

One of the themes of this year's event was "discovery."

Google is rolling out new ways not only to help consumers find what they're looking for, but also to reach them when they're open to "discovering something new," according to Brad Bender, Google's display and video advertising chief.

Google plans to place ads in a couple of high-profile spaces, including on the homepage of its mobile website, as well as the feed on its smartphone app.

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