How Amazon's Echo went from a smart speaker to the center of your home (MSFT, AAPL, AMZN, GOOG, GOOGL)

But then, the Alexa virtual agent that powers the Echo got more and more capable — evolving from a novelty into the de facto standard for controlling smart home appliances with your voice. Thermostats, humidifiers, Ikea lightbulbs, and even salt shakers are all controllable with Alexa.

"Alexa established first mover advantage and has built barriers to entry by now, with over 12,000 products having Alexa skills," says Gartner Research Director Werner Goertz.

And even Amazon CEO Jeff Bezos has hinted that the company is investing more heavily in Alexa as a smart home hub than as a way to shop its store.

This week, Amazon kept that momentum going with the launch of the appliance categories API, a way for developers to "tell" Alexa what their devices actually are. It opens the door to, say "turn on every single light at 6pm" or maybe even "open every blind, turn off every light, and start the coffee maker." It reflects Amazon's push to minimize complexity with Alexa, even as that dizzying array of compatible gadgetry only grows.

Now, with Apple, Google, and Microsoft all following suit and renewing their push into the smart home, here's how Amazon plans to keep its early lead in the fast-growing smart home category.

Slow burn

Alexa's transition from music-playing gadget to smart home hub even took some Amazon employees by surprise. Dave Isbitski, the chief developer evangelist for Echo and Alexa, says he never really gave much thought to the smart home until the device hit the market.

Smart home appliances had been around long before Amazon came onto the scene. It's just that there had been no good way to control them — asking users to pull out a remote or even a smartphone app just to turn their lights on and off was too frustrating for many, says

Manufacturers were looking for the "one thing, that one unifying device," he says, that would actually get people to use their products. So

"Having something be Alexa-enabled changes how often a customer engages with that device," says Isbitski. "Customers are just using it more."

He knew things had really changed toward the end of the Echo's first year on the market, where he'd go back to those same conferences to find that Alexa fans were making novelty items, like Star Wars lightsabers that could change colors with voice commands.

"That was the watershed moment for me," says I don't need to go tell people about this, they're coming to it on their own, and they're starting to tinker."

The competition

The success of Amazon Echo in the smart home has sparked something of an arms race in the tech industry: Apple has renewed its push to make Siri the center of the smart home, with Google advocating for its Google Assistant and Microsoft pushing for Cortana as rival standards.

Amid that competitive threat, Amazon says it has two secret weapons to keep smart home manufacturers loyal to the platform: First, analysts estimate that there are already 10 million Amazon Echo devices out there. And second, Amazon's commitment to making it as easy as possible for developers to integrate Alexa into their systems.

Amazon "made the decision very early on to make it open," says

How Amazon's Echo went from a smart speaker to the center of your home (MSFT, AAPL, AMZN, GOOG, GOOGL)

Slow burn

The competition

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