Skills: none Concepts: network services pros and cons, service level agreement, application hosting alternatives This work is licensed under a Creative.

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Presentation transcript:

Skills: none Concepts: network services pros and cons, service level agreement, application hosting alternatives This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License. Network application pros and cons

Where does this topic fit? Internet concepts – Applications – Technology – Implications Internet skills – Application development – Content creation – User skills

+ The application can be run from anywhere, including by mobile workers + Savings in in-house IT infrastructure + Savings in in-house personnel – system administrators and developers + The service provider has specialized expertise and skilled employees + Software can be continuously upgraded and debugged + Vendor sees how the application is used, and can focus on what people want + Upgrades do not have to be installed on client machines + Initial investment by the user is minimized ? Operating expense may be greater or less ? Reliability and availability may be increased or decreased - Intruders may be able to access the application - The service might not be as flexible and well tailored as software written in house - The service vendors may go out of business - The service vendor may alter the service, pricing, etc. - Data may be insecure at the vendor's site, particularly if it is out of the country - Exporting your data may be difficult or impossible, locking you into the service Network services pros and cons

Gmail down

Keep users informed

“We don't plan to continue developing Wave as a standalone product, but we will maintain the site, at least through the end of the year”. Senior Vice President Urs Holzle 8/04/ :00:00 PM Zap!! Google Wave is discontinued

$ $ $ Contract terms can change

Who owns the hardware? (User/Vendor) Where is it located? (Local/Cloud) Who owns the application software? (User/Vendor) Hardware owner Hardware location Application software In-house hostingULU Datacenter hostingUCU Cloud hostingVCU Application serviceVCV Hosting options

Summary Zap!!

Self-study questions 1.Give an example for each of the pros and cons listed in the initial slide. 2.Some university experience with network applications: Pick one of the pros and cons and create a slide that illustrates it. Like my slides, yours should include an image, and notes for explanation. 4.Find an example of a situation in which each of the four hosting options we mentioned is used.

Resources Google Apps dashboard: Announcement that Google Wave would be dropped: