Bing/Yahoo & Google SEO Similarities
Links – Quality of a backlink profile holds weight in both Google and Bing, so it is important to have high quality links to your website.
Results for Local Search – Page content and optimization should incorporate keywords based on geographic locations for success in the local results.
Paid Search – works the same in both, but remember this is only rented space for your website
Bing/Yahoo & Google SEO Differences
Bing/Yahoo and Google have both subtle and notable differences in the way they evaluate websites. Here's an outline of each (with facts taken from Google and Bing, respectively):
1) Matching Keywords
Google: Google’s algorithm recognizes synonyms and context around a keyword. This allows a little freedom and creativity with your content
Bing: Exact keywords are best here
2) Double-Meaning Search Queries
Google: If there is a keyword phrase with two meanings, the most popular website tends to rank first
Bing: A double meaning search in Bing provides local results first
3) Domain Age/Page Authority
Google: Domain age does not factor in as much as the quality of backlinks pointing towards a domain. Also, Google does give favoritism towards .edu and .gov, as they tend to have quality links and good content
Bing: Puts importance on domain age when assigning rank, as well as favors .edu and .gov websites
4) Flash Content
Google: Google cannot crawl and understand Flash websites
Bing: Understands and crawls Flash websites very well and sometimes gives credit to websites that use it
As you can see, Bing, Yahoo and Google all play a very important role in SEO and it is important to optimize for all. Just because you are ranking well in one search engine, does not mean you are ranking well in others.
5) Mobile Optimization
A little over a year ago, in November, Google launched the mobile-friendly label on mobile search results. This label is grey wording that is placed underneath the link that tells the user whether the website is going to work correctly on their mobile device or not. Starting on April 21st, 2015, Google has announced that they will be adding a ranking factor that will help mobile-friendly websites rank better in mobile search, so it is very important that website owners be prepared for this change.
Although Yahoo has not yet taken on any of these traits, Bing has quietly added the Mobile-friendly label in their mobile search results, just like Google has. Currently, it is unclear as to whether or not Bing will be introducing this ranking factor for their algorithm. In November, Bing did reveal some mobile friendly techniques that they may or may not use in the future. From what I see, it seems as though there will be more to come from Bing around mobile SEO.