A term or an expression for problem-solving related strategy

Is there a term/expression to describe a strategy or tactic of solving biggest problem first with an expected knock-on (domino-like) effect for smaller associated problems?

Similar to Pareto (80-20) principle, but looking for something more specific and descriptive/adjectival.


Solution 1:

In some contexts, the phrase First things first would be appropriate. It implies that there are other things to follow after the most important.

used to tell someone that more important things should be done before less important things

Cambridge dictionary