When you work with a Serverless API, you focus on the application, not the servers. Scalability is flexible and availability automated. The original tutorial links to a crash course on Serverless with Node available here:
Once the mouthpiece and aggregator of the blogosphere, Technorati lost its luster long ago. And now it's lost its API, too. The developer page promises a new API but also makes one thing clear: the old one is gone.