Frequently I see references to Seo strategy when it appears that people are actually referring to Seo tactics instead of strategies, so here's my 2c on the difference between strategies and Tactics. 

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VIII. VARIATION IN TACTICS

1. Sun Tzu said: In war, the general receives his commands from the sovereign, collects his army and concentrates his forces

2. When in difficult country, do not encamp. In country where high roads intersect, join hands with your allies. Do not linger in dangerously isolated positions. In hemmed-in situations, you must resort to stratagem. In desperate position, you must fight.