Chapter 5
Chapter 5
IT Infrastructures and
Emerging Technologies
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
Terms
Mainframe computer
Mini computer
Supercomputer
Personal computer
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)
Servers
Server – computer/provides software and other resources to other computers over a network
Blade Server
Web Server
Application
Server
Server racks
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
7 Major Infrastructure
Components
Terms
Operating System
Web hosting service
Legacy systems
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)
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)
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)
Software Platform Trends
(cont)
Software Outsourcing
Software package
Enterprise software
Software outsourcing
Cloud Services
SaaS
Service-level agreement (SLA)
Mashups and Apps
XML Example
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
