The Facebook logo is reflected against source code on the screen of a computer in this photo illustration.

Facebook plans to unveil new tools to help marketers better target ads and measure their impact at Advertising Week next Monday in New York, according to sources.

The new tools will enable brands to target messages to users not just on Facebook, but as they move across the web. These changes have been expected since Facebook bought the Atlas Advertiser Suite from Microsoft last year. The new ad product will also be called Atlas.