Office 365 Enterprise E3: modernize your Office and productivity infrastructure without any compromise. It is designed for businesses that need a powerful Office suite plus a wide range of productivity services coupled with rich compliance features and full management capabilities for IT. Help protect your company's data and keep your business compliant with enterprise-grade security and protection tools. Reduce your IT overhead and stop patching servers. Office 365 gives you highly configurable administration and a guaranteed 99.9% uptime, financially backed SLA, so you can spend more time managing your core business.