Leverage Azure and Office 365 for Multi-factor Authentication. The geo-distributed, high availability design of Azure AD means that you can rely on it for your most critical business needs. With the prevalence of smart phones, tablets, laptops, and PCs, people have far too many options on how they are going to connect, and stay connected, at any time. Multi-Factor Authentication through Azure is an easy to use, scalable, and reliable solution that provides a second method of authentication so your users are always correctly authenticated.