What is conditional formatting in Excel?
Excel Conditional Formatting is used to apply certain formatting to data that meets one or more conditions. Just like usual cell formatting, it lets you highlight and differentiate your data in various ways by changing cells' fill color, font color, border styles, etc. The difference is that it is more flexible and dynamic - when the data changes, conditional formats get updated automatically to reflect the changes.
Conditional formatting can be applied to individual cells or entire rows based on the value of the formatted cell itself or another cell. To conditionally format your data, you can utilize preset rules such as Color Scales, Data Bars and Icon Sets or create custom rules where you define when and how the selected cells should be highlighted.