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Cloud computing is an emerging model for obtaining on-demand access to shared computing resources often through the use of remotely located, widely distributed data networks. Kundra sees this new vehicle for shared computing services as a means to lower the cost of government operations, drive innovation and fundamentally change the way government delivers technology services across the board.NIST has been involved in cloud computing since its inception and has developed a widely accepted definition of cloud computing. The lab is currently focused on two major cloud computing efforts.One is leading a collaborative technical initiative known as the Standards Acceleration to Jumpstart Adoption of Cloud Computing (SAJACC) that is intended to validate and communicate interim cloud computing specifications, before they become formal standards.The major cloud computing requirements that will be addressed by these interface specifications are security, portability (the ability to move data) and interoperability (the ability of different systems to work together seamlessly).NIST researchers are working with other agencies and standards development organizations to identify existing specifications and requirements use cases -- ways users interact with cloud systems such as sending data to a cloud service provider's environment, and later retrieving it and removing it from that provider. The NIST approach will help to identify gaps in cloud computing standards and focus on those gaps. SAJACC researchers plan to create a portal to collect and share the use case,[link widoczny dla zalogowanych], specification, and test results information.Another major challenge with cloud computing is to safeguard government data in clouds, especially citizens' private information. Agencies using cloud computing will still use NIST-developed Federal Information Security Management Act (FISMA) guidelines.