With the May 20 introduction of the Surface Pro 3, Microsoft has unofficially withdrawn from the tablet market. If you’re looking for a tablet computer, your two main platform choices are now Android and iOS.

The Surface Pro 3 isn’t an Apple iPad competitor. It doesn’t go up against the Google Nexus family, or the broad Samsung Galaxy product range. Nope.

Instead, with the introduction of the Surface Pro 3, Microsoft has quietly redefined the Surface product line as consisting of ultralight Windows notebooks with touch-screens and removable keyboards. That’s a “tablet” in the sense of the circa-2005 Windows tablets that ran Microsoft Windows XP Tablet PC Edition. I still have a Fujitsu Lifebook T4010 from that generation, and it was an excellent notebook, with flip-around screen and stylus. Better than a conventional notebook, yes. A device like an iPad or Nexus or Galaxy? Nope.

Yet the Surface Pro family is not inexpensive. It’s priced like high-powered, lightweight notebooks like Apple’s MacBook Air. In some configurations, it’s even pricier. As Microsoft writes in its specifications: “Surface Pro 3 has a 12-inch ClearType Full HD display, fourth-generation Intel Core processor, and up to 8GB of RAM. With up to nine hours of Web-browsing battery life, Surface Pro 3 has all the power, performance and mobility of a laptop in an incredibly lightweight, versatile form.”

Doesn’t sounds like a Galaxy, Nexus or iPad killer. Of course, it can be sometimes, and that’s Microsoft’s thinking: Most of the time, you want a notebook. Sometimes you want a tablet. Why have two machines?

The complexity of Windows 8.0 (shipped with the original Surface Pro) and the newer Windows 8.1 made the Surface a questionable replacement for a standard tablet. For a short period of time, yes, you can unclick the keyboard and have a walk-around tablet for surfing the Web, watching a movie, reading a book, playing a game or filling in forms.

“Surface Pro 3 is a tablet and a laptop: multiple processors, RAM and storage options intersect with a sleek design that, with a simple snap or click, transform the device from a perfectly balanced tablet to a full-functioning laptop and back again— all in a beautiful package that is 30 percent thinner than an 1-inch MacBook Air,” says Microsoft. No comparison to what most of us call tablets.

The Surface Pro 3 is like an upgraded Fujitsu Lifebook from 2005. Another quote from Microsoft’s announcement:

“So many people carry both a laptop and a tablet but really want just one device that serves all purposes,” said Panos Panay, corporate vice president for Microsoft Surface. “Surface Pro 3 is the tablet that can replace your laptop—packing all the performance of a fully powered laptop into a thin, light and beautifully designed device. You’ll love being able to carry a single device for your next class, workday or weekend getaway knowing you have all the power you need.”

Also, the bevy of configurations—see Microsoft’s pricing sheet—makes this more like a notebook purchase than a tablet. Four storage configurations from 64GB to 512GB. Intel i3, i5 and i7 processors. 4GB or 8GB RAM. USB ports, microSD card reader, Mini DisplayPort, for external monitor: It’s a notebook. Except, of course, that you have to buy the keyboard separately. Bad move, Microsoft.

I’m a big fan of the Surface Pro. I own the original 2013 model and use it as my main Windows portable. Yeah, it’s a bit slow, and the battery life is terrible, but it’s an excellent notebook. The new Surface Pro 3 is superior. Were I shopping for a new Windows machine, I’d run down to the Microsoft store and buy one.

But it’s not a tablet. There’s no small form-factor version of the Surface Pro 3. There is no upgrade of the truly tablet-class non-pro Surface running Windows RT, which you can pick up for US$299.

Bottom line: Microsoft makes great hardware, and has pulled out of the tablet market.

Do you agree that Microsoft is focusing on notebooks, not on tablets? Write me at alan@camdenassociates.com.

Alan Zeichick, founding editor of SD Times, is principal analyst of Camden Associates.