• 1. Code re-use at every level: browser, back end & database
• 2. Strong, responsive and enthusiastic community
• 3. Performance and scalability
• 4. Node.js applications never buffer any data. These applications simply output the data in chunks
• 5. Being built on Google Chrome's V8 JavaScript Engine, Node.js library is very fast in code execution.
• 6. Asynchronous and Event Driven

The high-scalability of Node.js lets you spend less on infrastructure, since you can handle the same amount of load with less hardware.
It makes development faster and increases the productivity of teams, thanks to the NPM which has more than 230.000 modules that can be used instantly.
node.js architecture helps to overcome performance and scalability problems due to its non-blocking interaction
node.js is used for complex transactional systems to handle high degree of cuncurrent requests