Mitigating signup spam spikes with LaunchDarkly and Twilio Verify in an ExpressJS app (opens in new tab)

In this tutorial, we’ll build an ExpressJS demo app that has the flexibility to toggle extra verification layers on during spam attacks.  This demo combines Twilio Verify, a fraud verification API that can be used across many communications channels, with LaunchDarkly feature flags. Take that, spammers.