TECHNOLOGY GUIDE THREE. Emerging Types of Enterprise Computing

Transcription

1 TECHNOLOGY GUIDE THREE Emerging Types of Enterprise Computing

2 TECHNOLOGY GU IDE OUTLINE TG3.1 Introduction TG3.2 Server Farms TG3.3 Virtualization TG3.4 Grid Computing TG3.5 Utility Computing TG3.6 Cloud Computing TG3.7 Web Services and Service- Oriented Architecture

3 LEARNING OBJECTIVES 1. Describe the evolution of IT infrastructure. 2. Describe a server farm. 3. Define virtualization, and discuss its advantages. 4. Define grid computing, and discuss its advantages. 5. Define utility computing, and discuss its advantages. 6. Define cloud computing, and analyze its advantages and disadvantages. 7. Define and discuss Web services and service-oriented architecture.

4 TG3.1 Introduction Stages in the evolution of IT infrastructure: Standalone mainframe Mainframe and dumb terminals Standalone personal computers Local area networks (client/server computing) Enterprise computing Cloud computing and mobile computing

5 TG3.2 Server Farms

6 Server Virtualization (example)

7 TG 3.3 Virtualization Benefits Cost Savings due to lower number of physical servers Enhanced Agility More Service Oriented Focus of IT Department

8 Grid Computing

9 TG 3.4 Grid Computing Benefits Utilizes computing resources efficiently Enables Applications to run faster Provides Fault tolerance and redundancy Makes it easy to scale up or scale down

10 TG3.6 Cloud Computing

11 Cloud Computing Services Cloud infrastructure as a service Cloud platform as a service Cloud software as a service

12 3 Cloud Computing New from Wiley s 5 th Edition

13 Learning Objectives Describe the problems that modern information technology departments face. Describe the key characteristics and advantages of cloud computing. Identify a use-case-scenario for each of the four types of clouds. Explain the operational model of each of the three types of cloud services.

14 Learning Objectives 5. Identify the key benefits of cloud computing. 6. Discuss the concerns and risks associated with cloud computing. 7. Explain the role of Web services in building a firm s IT applications, providing examples.

15 Chapter Outline Introduction What Is Cloud Computing? Different Types of Clouds Cloud Computing Services The Benefits of Cloud Computing Concerns and Risks with Cloud Computing Web Services and Service-Oriented Architecture

16 TG Introduction 3.1 IT Infrastructure Evolution of the Modern IT Infrastructure

17 IT Infrastructure IT Components Hardware Software Networks Databases IT Services (Developing Information Systems, Managing Security and Risk, and Managing Data)

18 Evolution of the Modern IT Infrastructure 1. Stand-alone Mainframes 2. Mainframe and Dumb Terminals 3. Stand-alone Personal Computers 4. Local Area Networks (Client/Server Computing) 5. Enterprise Computing 6. Cloud Computing and Mobile Computing

19 TG What is Cloud Computing? 3.2 Cloud Computing Characteristics

20 Cloud Computing Characteristics Cloud Computing Provides On-Demand Self-Service Cloud Computing Encompasses the Characteristics of Grid Computing Grid Computing enables organizations to utilize resources more efficiently Grid Computing provides fault tolerance and redundancy Grid Computing makes it easy to scale up Grad Computing makes it easy to scale down

21 Cloud Computing Characteristics (Continued) Cloud Computing Encompasses the Characteristics of Utility Computing Cloud Computing Utilizes Broad Network Access Cloud Computing Pools Computing Resources Cloud Computing Often Occurs on Virtualized Servers Server Farms Server Virtualization

22 TG Different Types of Clouds 3.3 Public Cloud Private Cloud (or Corporate Cloud) Hybrid Cloud Vertical Clouds

23 TG Cloud Computing Services 3.4 Infrastructure-as-a-Service (IaaS) Platform-as-a-Service (PaaS) Software-as-a-Service (SaaS)

24 Platform-as-a-Service (PaaS) PaaS offers several advantages to customers: Application developers can develop and run their software solutions on a cloud platform without the cost of buying and managing the underlying hardware and software layers Underlying computing and storage resources automatically scale to match application demand Operating system features can be upgraded frequently

25 Platform-as-a-Service (PaaS) (Con t) PaaS offers several advantages to customers (Con t): Geographically distributed development teams can work together on software development projects PaaS services can be provided by diverse sources located throughout the world Initial and ongoing costs can be reduced by the use of infrastructure services from a single vendor

26 TG The Benefits of Cloud Computing 3.5 Seven Major Benefits to Individuals and Organizations

27 Seven Major Benefits of Cloud Computing to Individuals & Organizations Benefit 1: Making Individuals More Productive Benefit 2: Facilitating Collaboration Benefit 3: Mining Insights from Data Benefit 4: Reduce Costs

28 Seven Major Benefits of Cloud Computing to Individuals & Organizations (Con t) Benefit 5: Expand the Scope of Business Operations Benefit 6: Respond Quickly to Market Changes Benefit 7: Customize Products and Services

29 TG Concerns and Risks with Cloud Computing 3.6 Five Categories of Concerns

30 Five Categories of Cloud Computing Concerns Concern 1: Legacy IT Systems Concern 2: Reliability Example: Amazon Web Services Concern 3: Privacy Concern 4: Security Concern 5: The Regulatory and Legal Environment

31 TG Web Services and Service- Oriented Architecture 3.7 Benefits Provided to Organizations by Web Services Service-Oriented Architecture Web Services are based on Four Key Protocols

32 TG3.7 Emerging Software Trends Web Services Service-Oriented Architecture

33 Benefits Provided to Organizations by Web Services The organization can utilize the existing Internet infrastructure without having to implement any new technologies Organizational personnel can access remote or local data without having to understand the complexities of the process The organization can create new applications quickly and easily

34 Web Services are based on four key protocols: Extensible Markup Language (XML) Simple Object Access Protocol (SOAP) Web Services Description Language (WSDL) Universal Description, Discovery, and Integration (UDDI)

35 Utility Computing