Buster is Darby 's pet puppy who appeared in the series My Friends Tigger & Pooh.
IT as a service. IT as a service (ITaaS) is an operational model where the IT service provider delivers an information technology service to a business. The IT service provider can be an internal IT organization or an external IT services company.
Infrastructure as a service. Infrastructure as a service (IaaS) is an instant computing infrastructure, provisioned and managed over the Internet. Quickly scale up and down with demand, and pay only for what you use. IaaS helps you avoid the expense and complexity of buying and managing your own physical servers and other datacenter infrastructure.