Google's clean, simplistic home page helped the company lure customers and become a search giant. Aside from the art on its logo, Google's main search page never changes.
But don't let that fool you. Behind the scenes, the company is constantly tweaking how it searches and scans the Internet. Last year, it altered its search function 500 times—more than once a day!
Many of Google's ideas and innovations are championed by Marissa Mayer, vice president of search products and user experience.