The formula is the heart of an Excel file. And of course, we all want to do correct calculations and deliver accurate results. When there is something wrong, we want to trace back to those referenced cells to find the root cause. Excel natively has a built-in convenient formula dependent/precedent trace feature, it highlights the dependent/precedent cells and displays arrows to indicate the relationships. This helps users to trace back and find any error formulas easily.
Now, when bringing the spreadsheet online, we can do more. We can display the relationships in a custom way that is most useful according to the application context, or bring them to a different service or application for doing the validation programmatically.