Marketing Strategies is the high level overview of what you want your marketing efforts to accomplish. Having a strategy means you know what you want your campaign (one particular set of activities to achieve one objective) to accomplish. You define the niche market and your ideal customer profile as well as what you want them to do as a result of this campaign.
Strategies provide the 30,000 foot view. Tactics refers to the various activities like blogging, pay-per-click advertising, social networking, newspaper ads or online banner ads, and/or postcard mailing campaign.