Developmental editing is a comprehensive approach to revising a manuscript that focuses on the structure, content, and overall narrative of a piece of writing. It involves working closely with the author to enhance the story, characters, pacing, and flow, ensuring that the final product aligns with the writer's vision while also appealing to the intended audience. This process often involves multiple rounds of feedback and collaboration, making it essential in refining a draft before moving to copyediting and proofreading stages.