it's powerfull for reatime chatting feature and chatbot engine

Socket.IO is one of the important things which made Node.js popular. it uses Web-sockets and made it easily accessible and very reliable. it opened up so many interesting possibilities to the Node.js ecosystem, whenever there is a requirement to send an alert or notification or anything that should be shown in real-time. I'll use Socket.IO as my first preference.

Real time chat can be easily mange by socket.io