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ITM 102 (295)
Chapter 11

Chapter 11 Textbook Notes.docx

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Department
Information Technology Management
Course
ITM 102
Professor
johnlaughseen
Semester
Fall

Description
Chapter 11 Textbook Notes: Enterprise Architectures 11.1 – Managing Enterprise Architectures ­ enterprise architecture ­ data architecture ­ infrastructure architecture ­ application architecture ­ Enterprise architecture (EA) – includes the plans for how an organization ill  build, deploy, use and share its data, processes and IT assets ­ Enterprise architect – a person grounded in technology, fluent in business, a  patient diplomat, and provides the important bridge between IT and the business ­ Goals of Enterprise architecture o Reduce costs/improve productivity o Improve customer satisfaction o Create competitive advantages o Generate growth o Generate new revenue streams o Optimize the supply chain Global enterprise architectures ­ the internet creates a borderless global environment with enormous opportunity  for low cost communication and exchange with all parties involved in  international business ­ managing a global EA includes, not only technology issues, but political and  cultural considerations ­ more than 2 dozen countries attempt to restrict citizens’ access to the internet ­ estimating operational expenses with international IT operations is a global  challenge. Decision on in­sourcing or outsourcing Top international telecommunications issues ­ network o improving the operational efficiency of networks o dealing with different networks o controlling data communication security ­ regulatory issues o dealing with transborder data flow restrictions o managing international telecommunication regulations o handling international politics ­ technology and country­oriented issues o managing network infrastructure across countries o managing international integration of technologies o reconciling national differences o dealing with international tariff structures Building blocks of EA Enterprise architecture Information architecture Infrastructure  Application architecture architecture Backup and recovery Flexibility Web services Disaster recovery Scalability Open systems Information security Reliability Availability Performance Data architecture­ identifies where and how important data like customer records are  maintained and secured ­ backup and recovery o a copy is made of data ­ disaster recovery o the ability to get a system up and running in the event of a crash or failure.  It includes restoring backed up data ­ security o preventing unauthorized access, copying, deletion and modification of  data, ensuring continuity of operations, and managing user acess Figure 11.4 Backup and recovery ­ backup= an exact copy of a system’s information ­ recovery= the ability to get a system up and running in the event of a system  crash or failure and includes restoring the information backup ­ fault tolerance = a computer system designed that in the event a component fails,  a backup component or procedure can immediately take its place with no loss of  service ­ failover­ a backup operational mode in which the functions of a computer  component is assumed by another when the first becomes unavailable Disaster recovery ­ disaster recovery plan: a detailed process for recovering information or an IT  system in case of a disaster such as a fire or a flood ­ disaster recovery cost curve: charts the cost of the unavailability of information  and technology
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