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LECTURE NOTE CHAPTER 4 Information Systems Today: Managing in the Digital World 4-1.
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Transcript of LECTURE NOTE CHAPTER 4 Information Systems Today: Managing in the Digital World 4-1.
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LECTURE NOTECHAPTER 4
Information Systems Today: Managing in the Digital World 4-1
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Information Systems Today: Managing in the Digital World 4-2
The Need for an IS Infrastructure• Businesses rely on IS infrastructure to support
business processes, decision making and competitive strategy
• Business Processeso Activities that
organizations perform to achieve business goals
• Core Processes
• Supporting Processes
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Information Systems Today: Managing in the Digital World 4-3
IS Infrastructure
• IS infrastructure components include: 1. Hardware
2. Software
3. Networks
4. Data
5. Facilities
6. Human resources
7. Services
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Information Systems Today: Managing in the Digital World 4-4
IS Infrastructure: Hardware
• Integral part of the infrastructure:o Computerso Networking
hardware
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Information Systems Today: Managing in the Digital World 4-5
IS Infrastructure: Hardware (II)
• Issues:o What technologies to
chooseo When to replace
equipmento How to secure
infrastructureo How to assure
reliabilityo Etc.
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Information Systems Today: Managing in the Digital World 4-6
IS Infrastructure: Software
• Software enables companies to utilize their IS hardware
• Issues:o Updateso Fixing bugso Software licenseso Etc.
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Information Systems Today: Managing in the Digital World 4-7
IS Infrastructure: Communication and Collaboration• Help
organizations to become powerful
• Enabled by networking hard- and software
• Alsoo Email serverso Communication
softwareo Etc.
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Information Systems Today: Managing in the Digital World 4-8
IS Infrastructure: Communication and Collaboration (II)
• Key issueo What types of
communication technologies support the organization’s goals?
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Information Systems Today: Managing in the Digital World 4-9
IS Infrastructure: Facilities
• Need for specialized facilities, including:o Electricityo Coolingo Etc.
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Information Systems Today: Managing in the Digital World 4-10
Potential Threats to IS Facilities• Key issues:
o Where to house data centers, etc.
o Threats to IS facilities•Outside
intruders
•Environmental elements
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Information Systems Today: Managing in the Digital World 4-11
IS Infrastructure: Human Resources
• Need for trained workforceo Influences
location decision
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Information Systems Today: Managing in the Digital World 4-12
IS Infrastructure: Services
• Processes which are not core competencies are often delegated to companies with more experience
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Information Systems Today: Managing in the Digital World 4-13
Managing the Hardware Infrastructure• Issues to consider:
o Fluctuating computing demand
o Large-scale problems
o System complexity
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Information Systems Today: Managing in the Digital World 4-14
Fluctuating Computing Demand• On-demand computing
o Available resources allocated based on user needs
o Utility computing
• On-demand computing
rented from external provider
• Paid on as-needed
basis
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Information Systems Today: Managing in the Digital World 4-15
Solving Large-Scale Problems• Grid Computing
o Combines computing power of a large number of smaller, independent, networked computers• Tasks broken down
into smaller chunks
o Dedicated vs. heterogeneous grids• Acquisition vs.
management costs
o Edge computing• Save bandwidth
• Improved Response time
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Information Systems Today: Managing in the Digital World 4-16
Managing System Complexity
• Autonomic computingo Self-managing
systems requiring minimal human intervention to operate
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Information Systems Today: Managing in the Digital World 4-17
Managing the Software Infrastructure
• Primary issues to consider:o Cost of softwareo Integrationo Managing bugs
and licenseso Fluctuating
computing needs
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Information Systems Today: Managing in the Digital World 4-18
Open-Source Software• Open-source movement aided by the advent of
the Internet
• Source code is freely available for use and/or modificationo Open-source operating
system
• Linuxo Used in everything from
fridges to personal computers to supercomputers
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Information Systems Today: Managing in the Digital World 4-19
Open-Source Application Software• Open-source application software
o Apache Web server
o Firefox Web browser
o OpenOffice
• Drawback:o Finding customer
support may be
difficult
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Information Systems Today: Managing in the Digital World 4-20
Web Services
• Web-based software systems allowing for an interaction of different programs and databases over a network
• Service-oriented architecture
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Information Systems Today: Managing in the Digital World 4-21
Managing Software Assets• Managing software bugs
o Increased complexity of applications prevents error-free development
o Patch management system
• Managing software licensingo Hot topic due to problems with piracy
o Shrink-wrap license
o Enterprise license
o Software asset management
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Information Systems Today: Managing in the Digital World 4-22
Application Service Providers• ASPs provide on-demand software access
over the Webo Specific software located on the ASP’s server
o Accessed using Web-enabled interfaces
• Benefits:o Reduced need to maintain or upgrade software
o Fixed monthly fee for services
o Reliability
• Example: Google Calendar
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Information Systems Today: Managing in the Digital World 4-23
Application Service Providers (II)
• Types of ASPs:o Specialist or functional ASP
o Vertical market ASP
o Enterprise ASP
o Local ASP
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Information Systems Today: Managing in the Digital World 4-24
Managing the Communication and Collaboration Infrastructure
• Diverse communication needs
• Solution:o Convergence
o Increasing mobility
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Information Systems Today: Managing in the Digital World 4-25
Convergence of Computing and Telecommunication
• Convergence of functionality of deviceso Cell phone and PDA
• Convergence within underlying infrastructureso IP convergence
• Voice over IP• Videoconferencing over IP
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Information Systems Today: Managing in the Digital World 4-26
IP Convergence: VoIP
• Use of Internet technologies for placing telephone callso High quality of
transmission possible
o Ability to call from any place with Internet connection
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Information Systems Today: Managing in the Digital World 4-27
IP Convergence: Videoconferencing over IP
• IP used to transmit video datao Desktop video conferencing
o HP Halo meeting room: $400,000
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Information Systems Today: Managing in the Digital World 4-28
Increasing Mobility• Knowledge workers require access to
information from anywhereo Communication devices
o Wireless devices capable of connecting to organization’s internal network
• Wireless security concerns
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Information Systems Today: Managing in the Digital World 4-29
Managing the Data and Knowledge Infrastructure
• Organizations need to find new ways to manage: o Data from different
sources•Data mining
o Internal knowledge•Knowledge
management tools
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Information Systems Today: Managing in the Digital World 4-30
Data Mining
• Online transaction processing (OLTP)o Immediate response to user
requests
• Online analytical processing (OLAP)o Quickly conducting complex
analyses on data stored in a database
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Information Systems Today: Managing in the Digital World 4-31
Data Mining• Enhancing business intelligence by combining data
from various sources
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Information Systems Today: Managing in the Digital World 4-32
Operational vs. Informational Systems
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Information Systems Today: Managing in the Digital World 4-33
Data Warehouses and Data Marts
• Data Warehouseo Integration of multiple large databases and other
information sources into a single repository
o Pull together, integrate, and share critical corporate data throughout the firm
• Data Mart o Data warehouse that is limited in scope
o Customized for the decision support applications of a particular end-user group
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Information Systems Today: Managing in the Digital World 4-34
Increasing Business Intelligence with Knowledge Management
• Knowledge managemento The process used to get the greatest value
from knowledge assets
• Knowledge management systemo Collection of tools to generate, store, share,
and manage tacit knowledge assets
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Information Systems Today: Managing in the Digital World 4-35
Knowledge Assets
• Knowledge assets: skills, routines, practices, principles, formulas, methods, heuristics, and intuitionso Explicit knowledge
assets
o Tacit knowledge assets
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Information Systems Today: Managing in the Digital World 4-36
Managing the Facilities Infrastructure
• Ensuring availabilityo High availability
facilities
o Collocation facilities
• Securing the facilitieso Physical safeguards
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Information Systems Today: Managing in the Digital World 4-37
Ensuring Availability
High-availability facilities
Collocation facilities
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Information Systems Today: Managing in the Digital World 4-38
Managing Human Resource Infrastructure• Need for highly
trained workforce may be managed by:o Facility location
o Educational grants
o Human resource policies
o Outsourcing of human resource services
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Information Systems Today: Managing in the Digital World 4-39
Managing Human Resource Infrastructure
• Locating facilities in areas with high concentration of people with a certain skill
• Silicon Valley, CA or Seattle, WA
• Providing education opportunities for existing employees
• Educational grants
• Human resource policies• Flextime, telecommuting
• Outsourcing of human resource services• Bangalore, India
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Information Systems Today: Managing in the Digital World 4-40
Managing the Service Infrastructure
• Increased complexity of ISo Services providers
address infrastructure needs
o Outsourcing
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Information Systems Today: Managing in the Digital World 4-41
Services Providers Addressing Infrastructure Needs
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Information Systems Today: Managing in the Digital World 4-42
Outsourcing
• Partial or entire responsibility for IS development and/or management given to an outside organizationo Enables focus on core competencies
•Outsourced functionso Non-core functionso E.g., accounting, human resources
•Some business functions traditionally kept within the organization
o Information systems security
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Information Systems Today: Managing in the Digital World 4-43
Ensuring a Reliable and Secure Infrastructure
• Variety of threats to IS infrastructure
• Infrastructure reliability may be the most important concerno Disaster planning
o Designing the recovery plan
o IS controls, auditing and the Sarbanes-Oxley Act
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Information Systems Today: Managing in the Digital World 4-44
Disaster Planning• Disaster recovery plan
o Detailed list of procedures to follow when recovering from a systems-related disaster
• Backup Siteso Cold backup site – an empty warehouse with all necessary
connections for power and communication
o Hot backup site – a fully equipped backup facility
o Choosing a backup site location
• different geographic location to minimize the risk of a disaster happening to both systems
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Information Systems Today: Managing in the Digital World 4-45
Designing the Recovery Plan
• Recovery time objectiveso Specify the maximum time allowed to
recover from a catastrophic event
• Recovery point objectiveso Specify how current the backup data should
be