Twitter is ramping up its advertising strategy with the acquisition of MoPub, a mobile-focused ad platform.

With MoPub's advertising management system under its belt, Twitter plans to extend its mobile native advertising and build real-time bidding into its ad platform, wherein marketers can more easily automate and scale their buys.

"Our approach is to show an ad when we think it will be useful or interesting to a user, and that isn't changing," Kevin Weil, vice president of Twitter's revenue product, said in a blog post.

MoPub launched three years ago, on a mission to power advertising for mobile publishers. Now, the company produces billions of mobile ads every months around the world.

"Twitter has been 'mobile first' since their inception," CEO Jim Payne said in a blog announcement, adding that the two companies share that motto.

Payne promised that the company's commitment to the publishers will not change. If anything, it will be strengthened, he promised. Twitter's investment in MoPub's core business will give it a boost to build the tools and technology needs to help customers better run their businesses.

"In addition to investing in new capabilities for our publisher platform, we believe there are opportunities to bring better native advertising to the mobile ecosystem," Payne said. "With the support of the team and resources of Twitter, we'll be able to move even more quickly towards the realization of our original vision."

There is no word on when the acquisition is expected to be complete. Terms of the deal were not disclosed.

Twitter recently picked up scalable computing company Ubalo and location-based Spindle in an effort to continue building what is quickly becoming an all-encompassing social network.