Do We use separate SEO strategies for Google,Yahoo and Bing?

Yes We have to use separate strategies for Google,Yahoo and other searchengines.Morebacklinks are required for Google. It pays more attention to backlinks and site authority while Yahoo and Bing pays more attention to title and Meta tags. Hence, a site takes time to rank on Google as compared to Yahoo and Bing.

SEO strategies are same for Google, Bing & Yahoo. In my opinion if you work for better rank on Google, then you will get automatically better rank Bing. Yes there is not any doubt that all they have different algos. But their crawling agent crawls website and links. So make sure that you are creating good backlinks on Google.