Dramatic structure organises a play's action, its exposition, rising conflict, climax and resolution, into a sequence built specifically for live performance rather than for silent, private reading. Stagecraft is the separate, practical body of knowledge about what a physical stage, a cast of actors and a live audience can actually do together at any given moment, entrances and exits, scene changes, what an audience can plausibly see and hear from where they're sitting. A script that gets its dramatic structure right on paper can still fail completely once it meets an actual stage, if it ignores what stagecraft makes physically possible.
A play's structure has to be built around what a live performance can physically deliver
Unlike a novel, which can freely jump between locations, time periods or characters' interior thoughts with nothing but a new paragraph, a play's structure has to account for the real, physical limits of staging those same transitions live, in front of an audience, without breaking the performance's momentum. A dramatic structure that calls for a rapid sequence of scene changes across wildly different locations creates a genuinely different practical challenge for a live production than the same sequence would on the page, and playwrights write with those staging realities in mind from the outset, not as an afterthought layered on top of a purely literary structure.
Ignoring stagecraft can leave a structurally sound script literally impossible to perform well
A scene that reads powerfully on the page can still fail on stage if it demands something stagecraft can't actually deliver convincingly, an instant costume change with no time offstage to make it, dialogue timed against an action too complex for actors to physically execute at the pace the scene needs. This is exactly why playwrights, unlike novelists, typically need genuinely practical theatrical experience or close, iterative collaboration with directors and actors: a dramatically well-structured script still has to survive real contact with a stage's physical constraints before it can actually work as a performed play rather than simply as a piece of dramatic writing.
What we're still unsure about
That dramatic structure and stagecraft are genuinely distinct skills, and that a script can succeed structurally while failing practically on stage, are well established, widely recognised observations in theatre practice and criticism. What's more genuinely a matter of ongoing artistic debate is exactly how much a script should accommodate a specific theatre's or company's practical staging limits versus how much a production should stretch its own resources to meet a script's structural ambitions unmodified, and playwrights, directors and companies continue to make genuinely different, actively defended choices about that balance depending on the specific work and production.
This sits inside Dramatic Structure & Stagecraft, one of seven topics in Drama, one of five domains in Literature, one of seventeen subjects the app can quiz you on.