"Apple has lost a visionary and creative genius, and the world has lost an amazing human being," Mr. Cook said in a letter to employees. "We will honor his memory by dedicating ourselves to continuing the work he loved so much."
During his more than three-decade career, Mr. Jobs transformed Silicon Valley as he helped turn the once-sleepy expanse of fruit orchards into the technology industry's innovation center. In addition to laying the groundwork for the industry alongside others like Microsoft Corp. co-founder Bill Gates, Mr. Jobs proved the appeal of well-designed products over the power of technology itself and transformed the way people interact with technology.
"The world rarely sees someone who has had the profound impact Steve has had, the effects of which will be felt for many generations to come," Mr. Gates said in a statement Wednesday.
The most productive chapter in Mr. Jobs's career occurred near the end of his life, when a nearly unbroken string of successful products like the iPod, iPhone and iPad changed the PC, electronics and digital-media industries. The way he marketed and sold those products through savvy advertising campaigns and Apple's retail stores helped turn the company into a pop-culture phenomenon.
At the beginning of that phase, Mr. Jobs described his philosophy as trying to make products that were at "the intersection of art and technology." In doing so, he turned Apple into the world's most valuable company with a market value of $350 billion.