Alexa has been on Windows 10 PCs for a while now, but they've only been select models from Acer, Asus, HP and Lenovo. If you had another device, like a Microsoft Surface Laptop, you'd be out of luck.
That changes now, as the Alexa app for Windows 10 is now available to all in the US, UK and Germany. Availability will expand to other countries next year. There are two main ways to use Alexa on your Windows 10 PC.
If you've got a compatible PC, you'll be able to use Alexa hands-free. All you have to do is say "Alexa" to get it going. If you don't have a compatible PC, you'll have to hit a button or keyboard shortcut to activate Alexa.
Once you've got it installed and set up, you'll be able to use Alexa to get your weather forecasts, play music, control your smart home and all that fun stuff. However, you won't be able to do everything. You can't use Spotify or Pandora, and Alexa on Windows 10 can't handle video calls either.
As time goes on, Alexa for Windows 10 should get updated with that support and more PC-specific features. But for now, you'll be getting a paired back Alexa experience. Alexa does come with a visual experience here. It's not quite an Echo Show, it's more like the iOS or Android Alexa apps, but themed to Windows 10. You'll see the weather for the week and get recommendations and see what music you're playing.
You can download Alexa for Windows 10 at the Microsoft Store.