It's no secret that Amazon and Oracle don't see eye to eye. But things are far from improving, it appears. From a report: On Wednesday, two months after Oracle co-CEO Mark Hurd called Amazon's cloud infrastructure "old" and claimed his company was gaining share, Amazon Web Services chief Andy Jassy slammed Oracle for locking customers into painfully long and expensive contracts. "People are very sensitive about being locked in given the experience they've had the last 10 to 15 years," Jassy said on Wednesday on stage at Amazon's AWS Summit in San Francisco. "When you look at cloud, it's nothing like being locked into Oracle." Jassy was addressing a cultural shift in the way technology is bought and sold. No longer does the process involve the purchase of heavy proprietary software with multi-year contracts that include annual maintenance fees. Now, Jassy says, it's about choice and ease of use, including letting clients turn things off if they're not working.