- While there are many close friendships among tech CEOs in Silicon Valley, there are plenty of feuds, too.
- Some appear to be friendly rivalries - like Salesforce CEO Marc Benioff and Oracle CEO Larry Ellison - but others have become more contentious.
- Tim Cook and Mark Zuckerberg, for example, have been openly feuding for years, while Elon Musk and Jeff Bezos have made digs at each other over outer space.
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Silicon Valley is a breeding ground for rivalries.
In a place where world-changing ideas are born and billions of dollars are at stake, it's only natural that rivalries develop between Silicon Valley's power players, ranging from friendly sparring to pointed critiques.
While some feuds, like the one between Salesforce CEO Marc Benioff and Oracle founder Larry Ellison, appear to be born out of a close friendship and mutual respect, others - like the one between Mark Zuckerberg and Evan Spiegel - started over a spurned acquisition offer.
Here are some of the long-standing feuds, friendly or otherwise, between some of the world's most powerful execs.