Originally Posted by PC World

Google is rolling out new "under-the-hood" search technology, codenamed "Caffeine," that could change how your company ranks in its search results. For those businesses that live-and-die based on Google-generated traffic, this is potentially a very big deal.

In a blog post announcing the project, Google suggested that Caffeine could change search results, which raises the prospect of companies' needing to change their search engine optimization (SEO) to protect their Google ranking.

Originally Posted by Google

For the last several months, a large team of Googlers has been working on a secret project: a next-generation architecture for Google's web search. It's the first step in a process that will let us push the envelope on size, indexing speed, accuracy, comprehensiveness and other dimensions. The new infrastructure sits "under the hood" of Google's search engine, which means that most users won't notice a difference in search results. But web developers and power searchers might notice a few differences, so we're opening up a web developer preview to collect feedback.