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If you are looking for a more efficient and less time consuming method of consolidating data, you may have heard about virtual directory but don’t know what it is. To understand fully what a virtual directory is, first you need to know what virtualization is. Virtualization involves isolating a single computer resource from other or separate sources. Simply: a virtual directory server isolates several sources of identity at the back end of the server to appear as if it comes from a single source. A virtual directory server does not have equivalent database as it only collects data when it is needed. You can use a cache to enhance performance. This is accomplished by issuing real time requests to the right sources of data and merging them to create a single view before it is presented to the application of the server. The apps will not know that the identity data view is coming from different sources of data: the virtual directory isolates or abstracts, the lifting of querying every source specific bits of identity data that is being requested by the application. The most common scenario of virtual directory server is simplifying the access to scattered identity environment. In this case, an enterprise with web service employees can make use of inside or outside the organization. Such enterprises have acquired another organization that Active Directory forest of the organization does not have any trust built with corporate forest but the company that was newly acquired should be able to gain access to the web service. The web service is also using attributes from a custom database. This is a messy problem to resolve, especially with technologies that involve attribute synchronization. A virtual directory can be used as a solution for this problem. It is configured to give the web service with view containing the needed attributes of the service. The service will issue a standard request to the virtual directory server executing a real time query to different sources, consolidating the replies or responses into one. There is also additional benefit to using a virtual directory and that is the fact that it can also act as LDAP proxy.
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