Stages of the modern it services development and energy effectiveness of network technologies

Authors: 
Luntovskyy A.O.*, Huskov P.O.**, Masyk A.R.**

*Drezden University of Cooperative Education
**Lviv Polytechnic National University

The article reviews the architectural transformation of modern networks and their (mobile) services and applications. Periods of network services, Internet and cloud computing are posted. We describe the requirements for telecommunication networks in each of the individual stages of development and performance criteria specified network technologies.
The paper presents the measures that should be taken to improve the energy efficiency of modern technology making in the development of telecommunications networks of the future.
The concept and features of the evolution from "Internet of people" to "Internet of things" and "fog" computing are described in details. Certain categories distinction has been considered, such as IoT, IoS, Clouds, and Smart Grid. Much attention is paid to the need to transfer to the Fog Computing technology. A realization of energy-efficient XaaS type based on micro computer unit and energy-efficient network storage device is offered.
Examples of energy-efficient File Server (Private Cloud Storage) type service Raspberry Pi based  on microcomputer unit are shown. It is worth noting that there is some compromise in solutions for Fog Computing / Smart Grid technology development.
The choice varies between centralised, often virtualized systems (Clustering, Clouds) and decentralized systems. The paper describes the criteria for selecting between centralized and decentralized systems.