In an effort to encourage standards and interoperability, the cloud computing community is currently discussing architectural ontologies. Core to most approaches is an assumption of open access, public Internet connectivity and security provisioning by the cloud service provider. Solutions for the government marketplace, however, cannot make these assumptions. This article discusses an expansion of the cloud computing ontology put forth in a paper by the University of California at Santa Barbara and IBM. To address the needs of this specific marketplace, this Tactical Cloud Computing Ontology explicitly addresses these specific critical functions.

The concept of expanding on the UCSB/IBM ontology was prompted by an invitation to speak at two fairly unique conferences. The first invitation was to the Simulation Interoperability Standards Organization (SISO) Workshop held in San Diego, CA. SISO is an international organization dedicated to the promotion of modeling and simulation (M&S) interoperability and reuse for the benefit of a broad range of M&S communities. SISO's Conference Committee organizes Simulation Interoperability Workshops (SIWs) in the US and Europe. SISO's Standards Activity Committee develops and supports simulation interoperability standards, both independently and in conjunction with other organizations.  Los Angeles, CA was the site of the second conference, the Ground System Architecture Workshop (GSAW). Hosted by the Aerospace Corporation, GSAW provides a forum for the world's spacecraft ground system experts to collaborate with other ground system users, developers, and researchers through tutorials, presentations, working groups, and panel discussions on issues and solutions.

The common interest was of course cloud computing and both presentations focused on how to establish a common framework for developing cloud computing solutions. In order to set a baseline for the discussion, I first introduced the UCSB/IBM framework. Even though this layered approach hids many integration details, it served very well as a common discussion platform.

In order to better adapt this excellent framework for my audience, I then presented my personal views on how this framework could be modified to address Federal government community requirements.

Key modifications include:

• The addition of an access management layer;
• Explicit SOA related layers to address workflow orchestration, application security and service management; and
• An explicit connectivity layer in order to avoid a common assumption that the public Internet is always used as the networking layer in cloud computing solutions
  

I also briefed some advantages to using an ontology for developing federated cloud computing solutions which included:

• Providing a framework for enterprise architecture development, maintenance, and use that aligns, locates, and links disparate architectures and architecture information via information exchange standards to deliver a seamless outward appearance to users;
• Recogning the uniqueness and specific purpose of disparate architectures and allows for their autonomy and local governance while enabling the enterprise to benefit from their content; and
• As a way to organize an enterprise’s body of knowledge (architecture) about its activities (processes), people, and things within a defined context and current/future environment.

This approach seemed to enhance the conversation and interest so with great expectation, I'm now putting this out to the wider community for consideration. Your comments are welcomed and appreciated.

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