A hybrid publisher is a publishing company that works with authors to produce and distribute their books through both traditional and self-publishing channels. Hybrid publishers usually offer authors a higher level of editing, marketing, and production support than self-publishing services, but they also typically charge higher fees than traditional publishers.
Most hybrid publishers use a model in which they co-publish books with authors, sharing the costs and risks of publication. Under this model, the publisher and author typically invest an equal amount of money in the production of the book and then split the profits (after the publisher recoups their investment) evenly. This model allows authors to retain a higher percentage of their book's royalties than they would receive from a traditional publisher, while still benefiting from the publisher's expertise and invested capital.
Hybrid publishers typically use print-on-demand (POD) technology to print and ship books, which allows them to produce books without incurring the high upfront costs associated with traditional offset printing. This makes it easier for hybrid publishers to take on a wider range of titles, since they don't have to worry about stocking unsold inventory.
If you're considering working with a hybrid publisher, it's important to do your research to make sure you find a reputable company that will provide the level of support and services you're looking for. You can ask other authors for recommendations, read online reviews, or check out the Publisher's Association of America's directory of accredited publishers.