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1. Green Computing – Sustainable IT Practices

2. What is Green IT? IT = major global energy consumer Data centers use ~1% of global electricity Challenge: Rising demand from e-commerce, AI, IoT, streaming Goal: Eco-friendly design, usage, disposal of IT

3. Drivers of Green IT Rapid growth in online services Rising electronic waste (e-waste) Climate change concerns Global sustainability goals

4. Key Strategies Energy-efficient hardware & software Renewable energy in data centers Safe e-waste disposal & recycling Reuse & refurbishment AI-based cooling & optimization

5. Objectives of Green IT Improve energy efficiency Encourage reusability & repairability Adopt virtualization & cloud Implement green networking Align with UN SDGs

6. Scope of Study Global initiatives (Energy Star, EU EcoDesign ) Role of cloud & virtualization E-waste management policies Corporate & government actions

7. Significance of Green IT Environmental: Lower carbon footprint, less e-waste Economic: Reduced bills, lower costs Social: Reputation, compliance, sustainability contribution

8. Best Practices Invest in energy-efficient hardware Virtualization – consolidate servers Power management (sleep/hibernate) Renewable energy in IT facilities E-waste recycling & donation Sustainable software development Data center optimization (hot/cold aisles, cooling)

9. Additional Practices Cloud computing (AWS, Azure, Google Cloud) Paperless office (e-docs, e-signature) Remote work & telecommuting Green networking (efficient routers, SDN)

10. Early Initiatives Energy Star Program (1992, U.S. EPA) Encouraged energy-efficient IT hardware Focus: performance with reduced impact

11. Academic Studies Murugesan (2008): Energy-efficient IT lifecycle Gartner (2010): Green IT = top strategy Other studies: carbon footprint, e-waste policies

12. Industrial Practices Google: AI/ML for cooling → 40% savings Apple: 100% renewable → carbon neutral Infosys: Green campuses → 60% less energy Microsoft: Carbon negative by 2030 AI, automation, renewable energy integration Large-scale corporate sustainability impact

13. Key Insights AI & automation = energy efficiency Renewable energy crucia Corporate initiatives shape global trends Lifecycle & policy = critical

14. Energy-Efficient Hardware Energy Star devices Low-power CPUs, SSDs, LED monitors Benefits: cost savings, less cooling

15. Virtualization & Power Management Server Desktop Application virtualization Energy savings up to 80% Auto sleep, efficient BIOS settings

16. Data Center Optimization & E-Waste Cooling: hot/cold aisle, liquid cooling AI-assisted climate control Recycling, take-back policies, refurbishing

17. Cloud Computing Shared virtual resources Fewer servers, scalable & cost-effective AWS, Google, Azure use renewable energy

18. Cloud Models IaaS: AWS EC2, Azure PaaS: Google App Engine SaaS: Office 365, Zoom Benefits: less hardware, higher efficiency

19. Cloud Efficiency & Case Studies Server consolidation: 50% savings Renewable energy: 30% savings Google & AWS → renewable data centers Microsoft → 100% renewable by 2030

20. Importance & Regulations 50M tons e-waste annually Risks: toxic chemicals, pollution India: E-Waste Management Rules (2016) Global: EU WEEE, US state laws, Japan, Australia

21. Recycling & Case Studies Methods: dismantling, processing, reuse Dell: Zero waste by 2030 HP: Refurbishment & safe disposal Apple: Daisy robot → closed-loop supply chain Infosys: Campus collection programs

22. Green Networking & Future Trends Efficient device , SDN, IoT & 5G Case studies: Google, Cisco, IBM, Azure Future Trends: AI, Quantum, Edge, Blockchain, IoT Benefits: Environmental, Economic, Technological, Social