'a feat of technology' is correct and can be used in written English.
You can use it to describe a great or remarkable accomplishment or achievement achieved through the use of technology. For example, "The development of the smartphone was truly a feat of technology."
Spruce Goose was a feat of engineering which exemplified significant truths about innovation and entrepreneurship.
In the Brooklyn living room where I watched the game, and on Twitter, the crowd was sold from the moment she emerged, like a gladiator, atop an enormous, animatronic, prismatic, red-eyed, golden-hued lion chariot, which managed to come off as both a feat of modern technology — C.G.I.
Their product, available in beta for the Palm OS on Vindigo's Web site, is a feat of compression technology and tight programming.
To start with none, and then to send a whole constellation of satellites into space within a few decades, represents a remarkable feat of technology.
If we could do this, this would be an incredible feat of technology, of science, and an amazing piece of evidence that would change our understanding of the Universe forever.
The successful landing of Curiosity — the most sophisticated roving laboratory ever to land on another planet — marks an unprecedented feat of technology that will stand as a point of national pride far into the future.
"The successful landing of Curiosity – the most sophisticated roving laboratory ever to land on another planet – marks an unprecedented feat of technology that will stand as a point of national pride far into the future.
The chips flow past mounted cameras, which photograph any blemishes which might remain; in an awesome feat of technology, blades are programmed to pop up and slice off the blemishes.
