Private equity firm Blackstone Group is in advanced talks to acquire Ascend Learning LLC, a privately held U.S. maker of educational software, for more than $2 billion, including debt, according to people familiar with the matter.

The deal would underscore the appetite of buyout firms for companies in the educational software sector, at a time when corporate America and schools are using more digital tools to enhance learning and reduce some of their operational costs.

Blackstone has prevailed in an auction for Ascend Learning, and is now negotiating terms with its majority owner, private equity firm Providence Equity Partners LLC, the sources said last week.

A deal could be announced within days, the sources added, cautioning that it was still possible that negotiations would end without a deal.

The sources asked not to be identified because the negotiations are confidential. Blackstone and Providence Equity declined to comment. Ascend Learning did not respond to a request for comment.

The transaction would be the latest private equity deal in the educational software sector. In 2015, private equity firms TPG Capital LP and Leonard Green & Partners LP acquired Ellucian Company LP, a U.S. provider of software to universities and colleges, for $3.5 billion, including debt.

Based in Burlington, Massachusetts, Ascend Learning offers software programs for testing and certifications in various industries, from nursing to sports medicine. The majority of its revenue comes from the healthcare and public safety sectors.

Providence Equity also owns Blackboard Inc, a U.S. software company that provides learning tools for high school and university classrooms.

It explored a sale of Blackboard in 2015, but then ultimately decided to put it on hold. The private equity firm sold scuba certifier Professional Association of Diving Instructors earlier this year.

Based in New York, Blackstone is the world’s largest alternative asset manager, with more than $360 billion in assets under management.