Software Chitu Okoli Associate Professor in Business Technology Management John Molson School of Business Concordia University Montréal 1 Software sourcing How organizations get their software ID: 384079
Download Presentation The PPT/PDF document "COMM 226" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
COMM 226Software
Chitu OkoliAssociate Professor in Business Technology ManagementJohn Molson School of Business, Concordia University, Montréal
1Slide2
Software sourcingHow organizations get their software
2Slide3
Three major options for acquiring application software
Buy off-the-shelfBuy off-the-shelf with alterationsTailor-made - custom-developed software
3Slide4
Owning versus licensing software
Unless you build it yourself, you don’t actually “buy” software—you buy a license to use program
When you buy a book, you don’t actually buy the rights to modify and redistribute the book; you only buy a license to read your own paper or electronic copy of it
Ownership remains with development company
Licensee (“buyer”) usually needs to pay again for new versionsSlide5
Open-source software
Open-source software is owned by all the software contributors in the communityA special case of “buy off-the-shelf with alterations”
Contributing companies save money by shared labour with other contributors
Some vendors
make money by offering support
Users save money because they can use the software for free without paying license fees
The most important open source software is usually of high quality
5Slide6
Cloud computingClients do not own the
computers; they just use the cloud providers’ computersHardware, software, and applications are provided as a service, through a web browserThe cloud is a metaphor for the Internet, which makes software and data services available from any location at any timeCommon examples of cloud computing for personal use:Software as a Service (SaaS): Web e-mail (Hotmail), online applications (Google Docs)
Infrastructure as a Service (
IaaS
): online backup (Dropbox, iCloud), blogs (WordPress.com)Slide7
Business benefits of cloud computing
https://www.youtube.com/watch?v=whkyRvugqlM Slide8
Software security
8Slide9
Computer viruses and malicious codeVirus: A program that attaches itself to other programs, replicates itself, and spreads
Usually combined with some other malware (called its payload) to cause damage, such as damaging or stealing dataWorm: Replicates itself and spreads over a network, without attaching itself to other programsBotnet: a network of hijacked computers (zombies) that can do whatever the hacker wants them to do
Hacker uses a virus or worm to install a payload that secretly takes control of victims’ computers
Like a good biological virus, the botnet virus doesn’t usually let the user know that it’s even there, maybe even for years
9Slide10
Virus prevention Install antivirus software
Make backups (and scan them for viruses!)Avoid untrusted sources of softwareNever open unexpected e-mail attachments, even if you know the senderIf your computer gets a virus…Run anti-virus program with
fresh
updates
If still necessary, reformat your computer:
Reformat
Run antivirus
Reinstall programs
Reinstate your backups—you have backups, right?
10Slide11
11Slide12
Operating systems
12Slide13
What is Linux?13
https://www.youtube.com/watch?v=5ocq6_3-nEw Slide14
14Slide15
15Slide16
16Slide17
17Slide18
18Slide19
Popular operating systems
Major desktop operating systemsWindows (90%)Apple (4-7%)Linux (1-2%)
Major web server
operating systems
Linux/Unix (67%)
Windows (33%)
Major mobile operating systems (smartphones)
Android (75-85%)
iOS (11-19%)
19
Sources
https
://
en.wikipedia.org/wiki/Usage_share_of_operating_systems
http://
w3techs.com/technologies/overview/operating_system/all
Slide20
Why is Windows more popular for business than Mac?A somewhat biased (pro-Mac) but detailed perspective:How Windows REALLY Became The Market Leader (Pt.1)
How Windows REALLY Became The Market Leader (Pt.2) 20Slide21
SourcesMost of the slides are adapted from COMM 226 Business Technology Management
by David M. Kroenke, Andrew Gemino, Peter Tingling, and Earl H. McKinney, Jr. 2nd Custom Edition for Concordia University (2014) published by Pearson Canada. ISBN 13: 978-1-269-96956-7Other sources are noted on the slides themselves
21