Shared services
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NodeConductor is designed to support multiple API-based services for access sharing. Services can range from IaaS to
SaaS delivery models. Currently supported services are:

OpenStack (private cloud, volume-based VMs)
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OpenStack is a popular open-source toolkit for building private clouds.

TODO: describe instance structure: root + data volume

TODO: describe resize operations

TODO: describe account model (admin -> service accounts)
Add stub for OpenStack description
Add stub for OpenStack description
