1. IT Infrastructures and Emerging Technologies
Chapter 5
IT Infrastructures and Emerging Technologies

2. IT Infrastructure Hardware and software (IT), and Human resources
Computing platforms
Telecommunications services
Data management services
Application software services
Physical facilities management services
IT management services
IT standards service
IT education
IT research

3. Terms
Mainframe computer
Mini computer
Supercomputer
Personal computer

5. Evolution Mainframe and Minicomputer Era Personal Computer Era
Client/Server Era
Enterprise Computing Era
Cloud and Mobile Computing Era
Cloud computing – model/provides access to a shared pool of computing resources over a network (most commonly Internet)

6. Servers
Server – computer/provides software and other resources to other computers over a network
Blade Server
Web Server
Application Server
Server racks

7. Technology Drivers of Infrastructure Evolution
Moore’s Law
Nanotechnology
The Law of Mass Digital Storage
Metcalfe’s Law and Network Economics
Declining Communication Costs and the Internet
Other: technology standards

8. 7 Major Infrastructure Components

9. Terms
Operating System
Web hosting service
Legacy systems

10. Hardware Platform trends
Mobile Digital Platform
Grid Computing (Geographically dispersed; connecting to a single network) Ex: SETI, GridCafe
Virtualization (presenting computer resources so they can all be accessed in ways not restricted to physical or geographical location)

11. Hardware Platform Trends (cont)
Cloud Computing
Public vs Private
Green Computing
Autonomic Computing (organization-wide initiative; develop systems that can fix themselves)
High performance and Power saving processors
Multicore processors (perform reading and execution of computer instructions; two or more attached)

12. Software Platform Trends
Linux and Open Source Software
Software for the Web: Java and Ajax
Web Services and Service-Oriented Architecture
Web services – loosely coupled software components; exchange information using universal web communication standards
XML – Extensible Markup Language
HTML – Hypertext Markup Language
SOA – Service Oriented Architecture (collection of web services; used to build a firm’s software system)
Chaper 5 Notes

13. Software Platform Trends (cont)
Software Outsourcing
Software package
Enterprise software
Software outsourcing
Cloud Services
SaaS
Service-level agreement (SLA)
Mashups and Apps

14. XML Example
Chaper 5 Notes

15. Management Issues Platform and Infrastructure change
Scalability
Management and governance
Making Wise Infrastructure Investments
Total cost of ownership (TOC)
Competitive Forces Model for IT Infrastructure Investment