Demo: use serverless functions to build a newsletter opt-in.
Serverless functions allow us to integrate with third-party APIs using private API keys and other sensitive data in a secure way without requiring us to build a full-on server.
NOTE: Entering your email into this demo will actually sign you up for my newsletter. You’ll receive a confirmation email after opting in. So if you want to get content about building better websites, y’know, wink wink nudge nudge...