The difference between content marketing and content strategy manifests in the way you conceive, create, publish and then distribute your content.
Suppose you want to reach a destination “A”. In order to reach “A” you start walking and let us call that walking content marketing. Content strategy is the path that you take to ensure a safe and speedy arrival at “A”. If content marketing is an action, then content strategy is the brain behind that action.
Strategy, as we all know, is a series of actions that we take in order to arrive at a desired result. There is no use performing tasks without having an idea of what you need to do, at what time, for whom, and how.
Does content marketing precede content strategy or is it the other way around? Ideally, it is the other way around and in fact they both need to go parallel. But if I work for you, I would start with the latter.