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Virtuaalipilvi, often translated as virtual cloud, refers to the concept of a cloud computing environment that is not tied to a single physical location or hardware infrastructure. Instead, it utilizes virtualization technology to abstract and pool computing resources such as servers, storage, and networking from a distributed set of physical hardware. This abstraction allows these resources to be provisioned and managed as a unified, flexible, and scalable entity.

The core principle behind virtuaalipilvi is the separation of the logical representation of computing resources from their physical implementation. This means that users interact with a virtualized environment, accessing services and applications without needing to know or manage the underlying physical hardware. This offers significant advantages in terms of agility, cost-effectiveness, and operational efficiency.

Virtuaalipilvi environments can be offered in various models, including public cloud, private cloud, and hybrid cloud. Public virtuaalipilvi services are provided by third-party vendors over the internet, while private virtuaalipilvi is dedicated to a single organization. Hybrid virtuaalipilvi combines elements of both. The ability to dynamically allocate and deallocate resources as needed is a key characteristic, enabling organizations to scale their IT infrastructure up or down rapidly in response to changing demands. This elasticity is a primary driver for the adoption of virtuaalipilvi solutions across many industries.