Every business relies on some amount of IT infrastructure to support its operations and serve customers. The problem small firms face is that their small scale makes it cost prohibitive to build and maintain a really robust, secure, and sufficiently monitored infrastructure and network.
The cloud is essentially a method to share with other organizations the fixed costs of hardware,
software and support. Possible for smaller firms to compete because

Microsoft
Office 365

Taking your business to the cloud all securely over any PC, tablet, or smartphone.

Microsoft Exchange
Online

Hosting email , voice mail, and instant messaging, calendaring, and task management.

Microsoft
Azure

build, deploy, and manage applications through our global network of datacenters.

Business Phone
Service

Taking your business to the cloud all securely over any PC, tablet, or smartphone.