Chapter 1 Introduction To Cloud Computing_Part 1.ppt
- 1. INTRODUCTION TO INTRODUCTION TO CLOUD COMPUTING CLOUD COMPUTING Upon completion of this course, students should be able: C L O 1 Apply the core concepts of distributed systems underlying cloud computing systems and architecture. (C3, PLO1) Understand the basic concepts of cloud computing
- 2. What What you will you will learn? learn? Define Cloud Computing – by NIST and Barrie Sosinsky Explain the evolution of Cloud Computing Describe the characteristics of Cloud Computing: a. Resource Pooling b. Broad Network Access c. On-demand Capabilities d. Resource Pooling e. Rapid Elasticity f. Measured Services Discuss the advantages and disadvantages of Cloud Computing Discuss the challenges of Cloud Computing
- 4. Definition Definition Cloud Cloud Computin Computin g g The U.S. National Institute of Standards and Technology (NIST) defines cloud computing as: “Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.” Translation: Cloud computing provides IT services over the Internet in such a way that the end user doesn't have knowledge about where the data is being stored, where the infrastructure is located, and so on. The user receives the service without knowing any of the details about how it’s provided
- 5. Definitio Definitio n Cloud n Cloud Computin Computin g g Barrie Sosinsky, 2011 defines cloud computing as: “Cloud Computing refers to applications and services that run on a distributed network using virtualized resources and accessed by common Internet protocols and networking standards.”
- 6. Definitio Definitio n Cloud n Cloud Computin Computin g g Cloud computing is on-demand self-services- including data centers, servers, storage facilities, databases, networks and applications-over the Internet. Cloud computing relies on sharing of resources to achieve economies of scale. Cloud computing is flexible, scalable and measurable to customers. They pay only for what they use.
- 7. Evolution Evolution of Cloud of Cloud Computin Computin g g Reference: https://mycloudblog7.wordpress.com/2015/05/29/the-evolution-to-cloud-computing-how-did-we-get-here/
- 8. Evolution Evolution of Cloud of Cloud Computing Computing Cloud computing takes the technology, services, and applications that are similar to those on the Internet and turns them into a self-service utility. Two essential concepts: Abstraction: Cloud computing abstracts the details of system implementation from users and developers. Applications run on physical systems that aren’t specified, data is stored in locations that are unknown, administration of systems is outsourced to others, and access by users is ubiquitous. Virtualization: Cloud computing virtualizes systems by pooling and sharing resources. Systems and storage can be provisioned as needed from a centralized infrastructure, costs are assessed on a metered basis, multi-tenancy is enabled, and resources are scalable with agility.
- 9. Conventional Conventional vs vs Cloud Cloud Conventional Manually Provisioned Dedicated Hardware Fixed Capacity Pay for Capacity Capital & Operational Expenses Managed via System admins Self-provisioned Shared Hardware Elastic Capacity Pay for Use Operational Expenses Managed via APIs Cloud
- 10. Characteristic Characteristic of Cloud of Cloud Computing Computing Reference: https://www.youtube.com/watch?v=uroryFU78gM
- 11. Characteristic Characteristic of Cloud of Cloud Computing Computing Characteristic Explanation A client can provision computer resources without the need for interaction with cloud service provider personnel. (Apps: Server, Time, Network and Storage) Access to resources in the cloud is available over the network using standard methods in a manner that provides platform- independent access to clients of all types. (Apps: Smartphone, Tablets, PC’s wide range of locations) A cloud service provider creates resources that are pooled together in a system that supports multi-tenant usage. (Apps: Physical and Virtual Resource with dynamic provisioning) Resources can be rapidly and elastically provisioned (Apps: Adding of removing nodes, servers, resource or instances) The use of cloud system resources is measured, audited, and reported to the customer based on a metered system. On- demand self-service Broad network access Resource pooling Rapid elasticity Measured service
- 13. Advantage vs Advantage vs Disadvantage Disadvantage of Cloud of Cloud Computing Computing
- 14. Lower costs: Because cloud networks operate at higher efficiencies and with greater utilization, significant cost reductions are often encountered. Ease of utilization: Depending upon the type of service being offered, you may find that you do not require hardware or software licenses to implement your service. Quality of Service: The Quality of Service (QoS) is something that you can obtain under contract from your vendor. Reliability: The scale of cloud computing networks and their ability to provide load balancing and failover makes them highly reliable, often much more reliable than what you can achieve in a single organization. Outsourced IT management: A cloud computing deployment lets someone else manage your computing infrastructure while you manage your business. In most instances, you achieve considerable reductions in IT staffing costs. Advantage of Advantage of Cloud Cloud Computing Computing
- 15. Simplified maintenance and upgrade: Because the system is centralized, you can easily apply patches and upgrades. This means your users always have access to the latest software versions. Low Barrier to Entry: In particular, upfront capital expenditures are dramatically reduced. In cloud computing, anyone can be a giant at any time. Advantage of Advantage of Cloud Cloud Computing Computing cont. cont.
- 16. Requires a constant Internet connection: Cloud computing is impossible if you cannot connect to the Internet. Since you use the Internet to connect to both your applications and documents, if you do not have an Internet connection you cannot access anything, even your own documents. Does not work well with low-speed connections: Similarly, a low-speed Internet connection, such as that found with dial-up services, makes cloud computing painful at best and often impossible. Web-based applications require a lot of bandwidth to download, as do large documents. Features might be limited: This situation is bound to change, but today many web-based applications simply are not as full- featured as their desktop-based applications. 16 Disadvantage Disadvantage of Cloud of Cloud Computing Computing
- 17. Stored data might not be secure: With cloud computing, all your data is stored on the cloud. The questions is How secure is the cloud? Can unauthorized users gain access to your confidential data? Stored data can be lost: Theoretically, data stored in the cloud is safe, replicated across multiple machines. But on the off chance that your data goes missing, you have no physical or local backup. Put simply, relying on the cloud puts you at risk if the cloud lets you down. 17 Disadvantage Disadvantage of Cloud of Cloud Computing Computing cont. cont.
- 18. 18 Challenges of Challenges of Cloud Cloud Computing Computing Assignment 1: (Individual) Identify and explain the challenges of cloud computing.
- 20. Q & A Thank You Thank You Reference: Barrie Sosinsky (2011), “Cloud Computing Bible”, page 3 – 43.