1. Chapter 5 – Part II IT Infrastructure and Emerging Technologies

2. Outline Software - Application & System Software Open source software HTML & XML User Interface Methods of obtaining application software Management challenges

3. Software (Computer Program) & Types Instructions for a computer on how to operate System software Operating system (MS Windows, Mac OS, Linux) Hardware drivers (connects different equipment) Application software (“Applications”) Web browsers, Microsoft Office User interface (screens for users) – access to data and system’s functionality; should be easy to use (but!...)

4. Open Source Application Software Software that you can see how it is built (access to source code in original programming language) You can modify it Can be free Examples: Linux, Open Office Pros: Cheap, innovative Cons: Support uncertain, product life uncertain

5. HTML & XML HTML – mark-up language for designing user interface for Web- based systems; display control XML - mark-up language for defining content of files also useful for transfer of files between different systems on the Internet Easy to read and format

6. How Dollar Rent a Car Uses Web Services

7. Methods of Obtaining Software Build it or outsource development to a software vendor: custom solutions but expensive Buy (Off-the-shelf software): cheaper but not all to your needs Outsource (Rent it from Application Service Provider, Web services, providers of Software as a Service: Like buying but no worries about maintenance and updates; control out of hand

8. Management Challenges When to innovate systems? Timeline? Vendor support? Where to spend IS budget and how much? Balance: Benchmarks – Goals – Budget How to manage vendors? How to manage change?