Natively async for network programming. Reach for Native Addons when you need extra horsepower.
Static file serving, TLS terminator & HTTP upgrader for secure WebSocket.
When you need flexibility with compute power, memory, EBS, snapshots, security groups, etc.
Really sucks to configure, but provides excellent features when you get going.
Better performance for your $$$ than EC2, no nasty surprise traffic fees when you're bootstrapped.
AMQP 0-9-1 with topic exchanges for fast & reliable messaging. Built on the rock-solid Erlang OTP.
Can't beat PostgreSQL for relational data. User accounts, tokens, etc.
Just enough design for non-designer types.
For ES2015+ and JSX transpilation.