It is with a certain dread every autumn that some companies described by Amazon.com Inc. as its technology partners gather at a Las Vegas convention and find out if Andy Jassy has new plans to encroach on their turf.
These firms run their software on Amazon’s vast array of servers — part of what is known as “the cloud” — and from there sell use of their programs to others. Over nearly three hours, the boss of the Amazon Web Services unit walks the stage, revealing a road map of brand-new features Amazon itself plans to offer, a few of