1. VYTAUTAS SIMANAITIS Cloud computing © Kaunas 2013, KTU

2. Cloud computing history 2006 – Amazon remote computing services. 2007 - coined the term cloud computing. 2008 - Eucalyptus, first open-source cloud. 2010 - Cloud computing bubble, cloud computing standards. 2011 - smart computing frameworks. 2012 - cloud usage doubles. 2

3. Cloud computing, cluster, GRID Cloud computing - technology that delivers many kinds of resources as services. Cluster - focuses on improved performance and availability of a service by interconnecting a collection of stand-alone machines. GRID - resources of multiple computers are shared in grid computing which greatly helps in improving the flexibility and power. 3

4. Cloud computing and Cluster Similar in hardware level. Hardware fault and error tolerance. xSoftware. xPurpose of usage. Cluster for reliable service, cloud for many balanced tasks. 4

5. Cluster hardware structure Paveikslėlio šaltinis: http://www.securahosting.com/private-clouds/more-information/ 5

6. Types of clouds Private Cloud Public Cloud Hybrid Cloud Paveikslėlio šaltinis : http://onlinewebapplication.com/public-vs-private-cloud/ 6

7. Essential Characteristics Resource management Elasticity of cloud Accessibility and reliability Security Fault tolerance Cost 7

8. Cloud computing categories(1) Software as a Service – SaaS Platform as a Service – PaaS Infrastructure as a Service - IaaS 8

9. Cloud computing categories(2) 9 Paveikslėlio šaltinis : https://www.e-education.psu.edu/cloudGIS/cloud_introduction

10. Conclusions Rapidly evolving area of information technology. The system is designed to meet the needs of users. Provision of reliable and flexible service. 10

11. Thank you for attention 1.Cloud computing and cluster difference? 2.Cloud computing and GRID difference? 3.Types of cloud computing? 4.Cloud computing characteristics? 5.Cloud computing services? 11