Non-blocking, event driven I/O flow allows for single threaded processes to be quick
Web server accepts the request, spins it off to be handled, and then goes on to service the next web request
Each request doesn't require a new thread from the server (more RAM), making it able to handle scalability issues
MoRE
Great for:
Real-time web applications
Applications employing push technology
Large amount of concurrency
Data intensive applications (not CPU intensive)
"Where Node really shines is in building fast, scalable network applications, as it’s capable of handling a huge number of simultaneous connections with high throughput, which equates to high scalability"