chapter 5 it infrastructures and emerging technologies
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Chapter 5IT 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
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