For any process, you need to develop the strategy.Social media startegy is all about planning how to advertise your business through effective use of social media. Building a team, finding the audience taste,focusing on the recent trends are the important aspects.
Social media strategy must be designed unique for each platform,since user behavior and how the advertisement being displayed differs in each platform.Keeping a watch on what is making trend and advanced marketing tatics are important.
Social media channel of particular business or a brand should be unique and always active. Also note that, every business is unique and strategy for marketing should be unique.