Its a server, that able to run software which you can access remotely. You know, if we use EA in our platform. Then, we don't switch off the platform if you are a beginner there is no need for it. vps will be required if you use a robot or EA to do automatic trading i think automaticly trading is not save for you so manuly trading is best Forex market me trading karne ke liye broker ek server provide karte hai aur woh VPS server hai jo trader trading ke liye use karte hai agar trader esme EA upload kar dete hai to aise me koi trade miss nahi hota hai esko kaafi trader trading karne me use karte hai.