Tactic is basically a trick or method in order to achieve certain objective but it works temporarily or finds a temporary solution. You can use tactics like making some rational excuses of not completing your task in order to save yourself from the wrath of your boss. You can also use tactics to delay the completion of a project in order to find more time. Usually tactics are used in order to get immediate benefit but tactics do not work in long term planning and they will not get you greater results.
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Strategy is a broader term that refers to the planning of finding permanent solutions to the problems and helps in getting ultimate goals in an effective manner. Strategies comprise of long term goals and help in achieving those targets in a systematic and disciplined manner. Strategies usually bring positive results by eliminating all problems along the way and provide a base for hassle free and steady progress to achieve the ultimate targets.
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