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This content is part of the Essential Guide: Develop an IAM strategy for the mobile enterprise
Definition

identity as a Service (IDaaS)

Identity as a Service (IDaaS) is an authentication infrastructure that is built, hosted and managed by a third-party service provider. IDaaS can be thought of as single sign-on (SSO) for the cloud.  

An IDaaS for the enterprise is typically purchased as a subscription-based managed service.  A cloud service provider may also host applications for a fee and provide subscribers with role-based access to specific applications or even entire virtualized desktops through a secure portal.

This was last updated in March 2012

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