LinkedIn is rolling out a new ads API program for its B2B advertisers, the company announced today.

Launch partners include business marketing platform Bizo, social operating platform Unified, and Adobe‘s digital ad management system, AdLens.

Developers who use the LinkedIn Ads platform will now be able to build their own custom tools and other solutions.  Previously,  advertisers could only access their campaigns through LinkedIn’s self-serve interface.

“API access has been one of the most frequently requested features,” wrote LinkedIn’s Jen Weedn in a blog post.

Key features include the ability to automatically generate multiple campaigns, to test creative elements across LinkedIn’s B2B targeting facets, and to reallocate marketing spend in real-time for large-scale campaigns.

LinkedIn has grown to 187 million members in more than 200 countries and receives 3 billion monthly page views.