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Cloud computing[ 1 ] is the on-demand availability of computer system resources, especially data storage (cloud storage) and computing power, without direct active management by the user. [ 2 ] Large clouds often have functions distributed over multiple locations, each of which is a data center.
Cloud computing architecture refers to the components and subcomponents required for cloud computing. These components typically consist of a front end platform (fat client, thin client, mobile), back end platforms (servers, storage), a cloud based delivery, and a network (Internet, Intranet, Intercloud). Combined, these components make up ...
PERA is a reference architecture that can model the enterprise in multiple layers and in multiple stages of the architectural life cycle. Initially PERA was part of the PERA methodology, which consisted of three main building blocks: [2] Purdue Enterprise Reference Architecture, Purdue Reference Model, and; Purdue implementation procedures manual
Reference model. A reference model —in systems, enterprise, and software engineering —is an abstract framework or domain-specific ontology consisting of an interlinked set of clearly defined concepts produced by an expert or body of experts to encourage clear communication. A reference model can represent the component parts of any ...
A software reference architecture is a software architecture [ 1 ] where the structures and respective elements and relations provide templates for concrete architectures in a particular domain or in a family of software systems. An implementation of a reference architecture is called a framework or an application platform.
e. The Open Systems Interconnection (OSI) model is a reference model from the International Organization for Standardization (ISO) that "provides a common basis for the coordination of standards development for the purpose of systems interconnection." [ 2 ] In the OSI reference model, the communications between systems are split into seven ...
History of cloud computing. more timelines ... The concept of the cloud computing as a platform for distributed computing traces its roots back to 1993. At that time, Apple spin-off General Magic and AT&T utilized the term in the context of their Telescript and Personal Link technologies. [ 1 ]
Infrastructure as a service. Infrastructure as a service (IaaS) is a cloud computing service model where a cloud services vendor provides computing resources such as storage, network, servers, and virtualization (which emulates computer hardware). This service frees users from maintaining their own data center, [1] but they must install and ...