**7. Conclusion**

*Sustainability Assessment at the 21st Century*

resources and energy consumption [32].

*5.1.4 The deactivation phase*

*5.1.5 Discussion*

**6. Procedure models**

sustainable software [33].

**6.1 Proposal and methods**

computer program requires the consumption of services offered by other servers like data base management systems or Enterprise Resource Planning (ERP). It also causes additional power consumption. To update of a software, the product size influences records transfer process in the IT based infrastructure which are necessary to deliver updates. It also basis further power and resource utilization to the new software to want up-to-date and more prevailing hardware [13]. This new hardware is typically more power efficient than older hardware but on the other hand production of the new hardware and the disposal of the old hardware causes

If the data cannot be changed easily [20], example because it is stored in a proprietary data design, this may have an impact on economic sustainability of an organization. In this phase even the backing size of data format, if the domain transfers from one application platform to new domain platform. So the deactiva-

The result of this study shows that software application was not environmental friendly in the software development life cycle model. Lack of sustainability is a major flaw in the existing green software model in the following phases such as Requirement, Design, Coding, Testing and Implementation. There are a lot of negative impacts such as high level energy usage, e-hazardous waste, ecological system, financial etc. In this research we proposed a new Green based Software Development Life Cycle in designing; implementing and evaluating phases for a

At the middle the designing procedure, the whole Life Cycle of the built programming items must be considered [20]. Develop, purchase, administrate, and use. In development of sustainability review study and preview study, process evaluation, sustainability presentation taken into consider about GREENSOFT model. In purchase of software product similar to the ENERGY STAR(R) that indicates whether a software product is energy efficient or meet certain sustainability requirement in the future. In administrate making software available by installing, configuring, and maintaining it. procedure model should implement a continuous improvement cycle that is energy utilization, should be checked regularly in order to improve these with appropriate measures apart from the data center operation includes networking, desktop PC, installed software resources utilization are need to be monitored in the administrative to procedure for users both the professionals and home users need to maintain the guidelines or checklist related to green and

Proposal and methods address collaborator with various roles [20] General roles review by the GREENSOFT model are: Planner, Customer, Organizer, and User. On the other hand, there may be more functional roles like Software Architect, Web Administrator, Requirements Engineer, or Application Developer. In assumption,

tion of old database format leads to economic and technical sustainability.

sustainable development to overcome the above factors.

**74**

The existing models are used to maintain green and sustainable software in the development and process evaluation. The GREENSOFT model has explained three order effects such as, the first-order effect focus on development to end, second order concentrate on sustainability area and last one focus on recommendations and tools for IT users in creating, maintaining a product for the sustainable development. Our approach is to develop Green IT Star model for green environment which focuses on five phases such as design, implementation, and requirement, coding and testing. The aim of this research is to help IT users in developing a green software and green hardware and improving the Sustainability in Software Engineering Process using Green IT Star model and has attained eco-friendly environment in design and requirement phase. The future research work is to achieve the Green software engineering in each Software Development Life Cycle phases on implementation, coding and testing phase.
