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Bala Iyer

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Does architecture matter in the era of cloud computing?

  
  

I was pondering this question while putting together a presentation on how organizations are getting value from cloud computing. The definition of architecture does not change when dealing with cloud computing. It still deals with specifying what modules will be part of a system and what their functions will be. It also deals with interfaces and standards.

      Interfaces: describe in detail how the modules will interact, including how they fit together and communicate

      Standards:  test a module’s conformity to design rules and measure the module’s performance relative to other modules.

What cloud computing does is to impact an organizations architectural capability. I define that as The ability to access products and information from within and outside the boundaries of the organization and the ability to integrate them flexibly across disciplines and boundaries within the organization.

With cloud computing, while we may know the existence of all the modules, we may not have transparency to its affordances. For example, does that module depend on other modules to perform its functions? What is the governance mechanism for managing change for the module? How can we detect and manage conflicts in logic across modules? How can we make sure that we have the desired 'ilities (security, flexibility, reliability)? If one has sourcing independence and flexibility, how can you qualify new modules dynamically?

In summary, while clouds don’t change the concept of architecture, they do impact an organizations architectural capability by introducing new issues to the old problem.

Posted by Bala Iyer on Wed, Jan 12, 2011 @ 05:17 PM

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