These use cases thus help us to document key

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agency consumer concerns and issues through specific scenarios. These use cases thus help us to document key technical requirements for USG cloud-related standards in the areas of security, interoperability and portability as required for the formulation of this roadmap. The “Cloud First” business use case called out by the Federal CIO is a more general expansion of this analysis to multiple interacting current systems and cloud implementations. This expansion is to support evolving business processes as cloud deployments are implemented. It requires interoperability and portability across multiple cloud deployments and enterprise systems. 4.2 Technical Use Cases The SAJACC Working Group has produced a set of preliminary use cases developed for the SAJACC project for the first pass through the SAJACC process. Through a series of open workshops, and through public comment and feedback, NIST will continue to refine these use cases and add new use cases as appropriate. These use cases are technical in nature, capturing the more generic and cross-cutting technical requirements of cloud consumers. They are descriptions of how groups of users and their resources may interact with one or more cloud computing systems to achieve specific goals, such as “how to copy data objects into a cloud.” There is a natural mapping from the high-level business use cases to the SAJACC technical use cases, where the business operational stories of specific agency consumers will imply specific technical requirements expressed in SAJACC technical use cases. For example, the business use case of an agency consumer’s move of its virtualized computing infrastructure to an IaaS cloud vendor implies the technical requirement of “ Virtual Machine ( VM) control: manage
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