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Tuesday, May 08, 2012
There's nothing new under the sun
I first mentioned the Cloud Computing concept back on Oct. 23rd 2000!
(http://www.networkworld.com/newsletters/dir/2000/1023dir1.html): “ERoom
Technologies this week will unveil tighter directory integration for its
Web-based application that provides companies with online workspaces for
sharing documents and organizing projects.”
Something else I talked about back then is also relevant to the age of Cloud-based services, and it's a
phrase that is equally applicable to identity services and their use by programmers -
“To be useful, the directory[or, today, the Identity Service] must be
pervasive and ubiquitous.” Some people think the two words are synonymous, but
there is a difference.
By pervasive, I mean that its available anywhere and every
time we want to use it. By ubiquitous, I mean its available everywhere and any
time we want to use it. See the difference?
For a programmer to make use of a service (rather than
create her own) she has to know that it will always be available (“every time”
and “any time”) wherever (“anywhere” and “everywhere”) she needs it. If there
are places or times that the data isn’t available, and the program needs it,
then the programmer will build a separate structure that is available any time
and every time, anywhere and everywhere.
That’s what lead to the success of Active Directory – even
organizations using something else as their enterprise directory had some
Windows servers so AD was always there – programmers could count on it. You
couldn’t say that about Netscape’s directory or Novell’s.
As we move into the cloud-services era, it is imperative
that identity services be readily available and easy to use for those creating
the code to run the services. There’s no single service that can be relied on,
though, so its going to take a feature-rich set of standard protocols to make
it happen.
That discussion arose as almost an aside in a three part look
at “Essential qualities of directory services,” qualities that are just as
important today as they were in 2000: a well-designed directory service needs
the ability to be distributed, replicated and partitioned. Twelve years ago, we
were only looking at the needs of the enterprise but today the identity
datastore (i.e., the directory) is going global so these attributes are needed
more than ever. I’ll look into that more closely in another post.
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