You can use your favorite social network to register or link an existing account:
Or use your email address to register without a social network:
Sign in with these social networks:
Or enter your username and password
Forgot your password?
Yes, please link my existing account with for quick, secure access.
No, I would like to create a new account with my profile information.
Office 365 sign-in
Office 365 Community
FastTrack: Office 365 deployment resources
Ignite: Office 365 admin training resources
Office 365 TechCenter
"Your complete office in the cloud" is how we think of Microsoft Office 365. While it gives us enormous pride that one billion people use Office, we deeply appreciate the responsibility we have to meet and exceed our customers' expectations every day. We recognize that productivity apps are mission critical; using them is how work gets done. It is imperative for us to ensure our service is trustworthy and reliable while we continue to add new capabilities to Office 365. Our measure for this is service availability.
Since launching Office 365 two years ago, we have continued to invest deeply in our infrastructure to ensure a highly available service. While information has been available in detail for our current customers, today we're making this information available to all customers considering Office 365. We measure availability as the number of minutes that the Office 365 service is available in a calendar month as a percentage of the total number of minutes in that month. We call this measure of availability the uptime number. Within this calculation we include our business, government and education services. The worldwide uptime number for Office 365 for the last four quarters beginning July 2012 and ending June 2013 has been 99.98%, 99.97%, 99.94% and 99.97% respectively. Going forward we will disclose uptime numbers on a quarterly basis on the Office 365 Trust Center.
Here are a few more details about the uptime number:
As a commitment to running a highly available service, we have a Service Level Agreement of 99.9% that is financially backed.
We have been building enterprise-class solutions for decades. In addition, Microsoft runs a number of cloud services like Office 365, Windows Azure, CRM Online, Outlook.com, SkyDrive, Bing, Skype and Xbox Live to name a few. We benefit from this diversity of services, leveraging best practices from each service across the others improving both the design of the software as well as operational processes.
Below are some examples of best practices applied in design and operational processes for Office 365.
Redundancy. Redundancy at every layer--physical, data and functional:
Resiliency. Active load balancing and constant recovery testing across failure domains:
Distributed Services. Functionally distributed component services:
Monitoring. Extensive monitoring, recovery and diagnostic tools:
Simplification. Reduced complexity drives predictability:
Human back-up. 24/7 on-call support:
We understand that there will be times when you may experience service interruptions. We do a thorough post-incident review every time an incident occurs regardless of the magnitude of impact. A post-incident review consists of an analysis of what happened, how we responded and how we prevent similar incidents in the future. In the interest of transparency and accountability, we share post-incident review for any major service incidents if your organization was affected. As a large enterprise, we also "eat our own dogfood," i.e., use our own pre-production service to conduct day-to-day business here at Microsoft. Continuous improvement is a key component to provide a highly available, world-class service.
Transparency requires consistent communication, especially when you are using online productivity services to conduct your business. We have a number of communication channels such as email, RSS feeds and the Service Health Dashboard. As an Office 365 customer, you get a detailed view into the availability of services that are relevant to your organization. The Office 365 Service Health Dashboard is your window into the current status of your services and your licenses. We continue to drive improvements into the Service Health Dashboard including tracking timeliness of updates to ensure so that you have full insight into your services health.
We also have some exciting new tools to improve your ability to stay up to date with the service. Last week we released a new feature in the administration portal called "Message Center." Message Center is a central hub for service communications, tenant reporting and actions required by administrators. Also, by the end of this year, administrators can expect a new mobile app that will provide service health information as well as other communications regarding their service.
Running a comprehensive and evolving service at ever increasing scale is a challenge and there will be service interruptions despite our efforts. We want to assure you that we are continually learning and are relentless in our commitment to provide you with a reliable highly available service that meets your expectations. Service continuity is more than an engineering principle it is a commitment to customers in our SLA and as one of the key pillars of Office 365 Trust Center (the other four pillars being Privacy, Security, Compliance and Transparency). This public disclosure of Office 365 uptime is evidence of our ongoing commitment to both Service Continuity and Transparency.
I have to make a change to meet HA/DR initiatives of my Org and I believe that Office 365's is the answer. We will be migrating very soon, and this article just confirms that decision.
When it comes to real-time communications and collaboration, there's no room for compromise. At Microsoft, we pride ourselves on having the broadest definition of productivity, with exactly that -- no compromises. So how does Lync Online with Office 365
Starting today, you can download the Office 365 Admin app for your Windows Phone 8 to connect to your organization's Office 365 service status on the go. The new app enables you to view service health information and maintenance status updates from your