Microsoft’s new search engine, Bing, will be publicly released on June 1. The engine will officially replace Live Search on Wednesday, June 3.

Bing hybrids search results with content. Not only do users get exposed to a list of links, but each link can be previewed before clicking through to the site and results are categorized. Additionally, Bing will have more in depth components, like travel information powered by Farecast, Bing Cashback and Bing Maps.

This is Microsoft’s newest attempt to gain market share from the top search engines, Google and Yahoo!. Microsoft contends that what has become status quo for other search engines leaves users with an unsatisfying experience. It is going to try and convince the public of this as well. Advertising analysts estimated that Microsoft will spend around $100 million on marketing to promote Bing to the masses.

All PPC advertising campaigns currently on Live Search and MSN will be automatically transferred over to Bing. However, Microsoft is emphasizing a new relevancy score that is stricter and focuses on the content of advertisers’ landing pages. It is recommended that current campaigns be closely monitored for any changes in ad position and optimized to the most relevant keywords.