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33 Cards in this Set

  • Front
  • Back
IT Infrastructure
the shared technology resources that provide the platform for the firm's specific information system applications
Firm Wide Services
- computing platforms providing computing services
- telecommunications services
- data mgmt services
- application software services
- physical facilities mgmt services
- IT mgmt, standards, education, research & development services
Technology Drivers of Infrastructure Evolution
1. Moore's Law & microprocessing power
2. The Law of Mass Digital Storage
3. Metcalfe's Law & network economics
4. Declining communications costs & the Internet
5. Standards & network effects
Moore's Law & Microprocessing Power
- power of microprocessors doubles every 18 months
- computer power doubles every 18 months
- the price of computing falls by half every 18 months
Nanotechnology
Uses individual atoms & molecules to create computer chips & other devices
Law of Mass Digital Storage
- amount of digital information is roughly doubling every year
- the cost of storage is falling at an exponential rate of 100 % per year
Metcalfe's Law & Network economics
The value of a network grows exponentially as a function of the number of network members
7 Major Components of IT Infrastructure
1. Computer hardware platforms
2. operating system platforms
3. enterprise & other software applications
4. data management & storage
5. networking/telecommunications platform
6. Internet platforms
7. consulting & system integration services
Computer Hardware Platforms
client machines
server machines
mainframe systems
Operating System Platforms
Windows dominates
Unix or Linux widely used as server software
Apple widely used as well
Enterprise Software Applications
largest suppliers of enterprise software are:
SAP
Oracle
PeopleSoft
SANs
Storage Area Networks
Storage Area Networks
connect multiple storage devices on dedicated network
Software Integration
ensuring new infrastructure works with legacy systems
Legacy Systems
older TPS created for mainframes that would be too costly to replace or redesign
Contemporary Hardware Platform Trends
1. Emerging mobile digital platform
2. Grid Computing
3. Cloud Computing & Computing Utility
4. Autonomic Computing
5. Virutalization & mulitcore processors
Grid Computing
connecting geographically remote computers into a single network capable of working in parallel on business problems that require short term access to large computational capacity
Autonomic Computing
effort to develop systems that develop systems that configure, heal & protect themselves
Virtualization
presents computing resources so that they can be accessed in ways that are not restricted by configuration
Multicore processors
reduced power requirements, enhanced performance
Contemporary Software Platform Trends
1. Linux & Open Source Software
2. Software for the web: Java & Ajax
3. Web Services & Service-Oriented Architecture
4. Mashups & Widgets
5. Software Outsourcing
Java
object oriented programming language
Ajax
asynchronous javascript & XML
XML
Extensible Markup Language
SOAP
Simple Object Access Protocol
WSDL
Web Services Description Language
UDDI
Universal Description, Discovery & Integration
Mashups
Combinations of two or more online applications such as combining mapping software with local content
Widgets
Small programs that can be added to Web pages or placed on the desktop to add additional functionality
Software Outsourcing
1. changing sources of software
2. software packages & enterprise software
3. software as a service (SaaS)
4. Software outsourcing
Management Issues
- dealing with infrastructure change
- mgmt & governance
- making wise infrastructure investments
Scalability
ability to expand to serve larger number of users
TCO Model
used to analyze direct & indirects costs of systems