The Perseus Books Group has created a distribution and marketing service that will allow authors to self-publish their own e-books, the company said on Sunday.

The new service will give authors an alternative to other self-publishing services and a favorable revenue split that is unusual in the industry: 70 percent to the author and 30 percent to the distributor. Traditional publishers normally provide authors a royalty of about 25 percent for e-books.

The service arrives as authors are increasingly looking for ways to circumvent the traditional publishing model, take advantage of the infinite shelf space of the e-book world and release their own work. That’s especially the case for reviving out-of-print books whose rights have reverted back to the author.

Bloomsbury, a publisher based in Britain, said on Wednesday it had created a new publishing arm that would release digital-only titles. Companies like Open Road Integrated Media have successfully published digital editions of backlist books whose rights were not held by a publisher.