Sure, that`s one way of looking at it. But tactics without a good strategy are just a bunch of actions that may or may not lead to any measurable result. Strategy isn`t essential ... but it`s very helpful.
Five Forces Framework for Strategy. Michael Porter is brilliant. His now classic take on strategy is world famous for good reason. The five forces framework [ you can add more if you like ] and his generic strategies are super useful and make business a lot less difficult in my opinion.
Equally brilliant or possibly more brilliant:
Cristian Mitreanu`s Work
In fact just about all of Cristian Mitreanu`s work is exceedingly brilliant even if it`s a bit complex. His strategy frameworks have changed the way I look at the business world ... he is definitely a really important thinker in this area.