Microsoft Office is one of the most popular and useful software in the world. More than 1.5 billion people around the world use Microsoft Office. Office.com/setup comes with subscription, means users need to pay to use the services of office 365. Office 365 always allows you to have a updated version of it as it is updated from the Microsoft’s end. Office.com/setup gives you great features more than using Microsoft word and excel. Office 365’s all applications and services are connected.