I think his vision of smartphones has held up well. From page 74 of my hardcover copy of The Road Ahead:
What do you carry on your person now? Probably at least keys, identification, money, and a watch. Quite possibly you also carry credit cards, a checkbook, traveler's checks, an address book, an appointment book, a notepad, reading material, a camera, a pocket tape recorder, a cellular phone, a pager, concert tickets, a map, a compass, a calculator, an electronic entry card, photographs, and perhaps a loud whistle to summon help.
You'll be able to keep all these and more in another information appliance we call the wallet PC.
I started with a manually-packaged Python function and credstash [1] to store credentials for non-AWS services. It gets invoked nightly by CloudWatch and has been bulletproof for months. I recently built a microservice [2] for Election Day with Flask and deployed it behind API Gateway with Zappa [3]. Lambda isn't for every use case, but for those it is, I'm bullish.
It's not mentioned on the landing page, but Flow integrates with PowerApps [1]. The PowerApps console shows Flows [2], and PowerApps can trigger Flows [3].
Install Flanker [1] and you can do it locally. Just make sure your ISP/firewall allows outgoing SMTP connections on port 25, and ideally have Redis running for caching [2].