How does a tactic differ from a strategy?

Tactics consist of how to make a change, while strategy is deciding what change to make. Tactics are about 'the how,' and strategies are about 'the what.' In other words, a strategy is an approach that makes the best use of resources and other factors to secure advantage for an organization's goal. Tactics are the means for implementing strategy. It's the difference between a plan, and a way of accomplishing a plan.