How does tension play out across the three acts? When you search online, it’s easy to find diagrams that show story structure. The following diagram is a synopsis of several of the most common structures.
I think this graph is an extremely common format amongst most pieces of literature. Every checkpoint such as setting the stage, tension, climax, and ending is carefully thought out and placed there to make up a complete story. This order makes sense because if any of these points were earlier or later then it wouldn't make much sense to the reader and would leave them confused.
Personally, I use this format whenever I'm writing essays as well as it gives me a clear format to work with and allows me to think how my story will play out. I've also seen some authors think about how their story will play out backwards. This means thinking about the conclusion and conflict beforehand before setting the stage in order to bring some shock or unexpected twists.