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Chapter 11 & 12.docx

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Mirou Jaana

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Chapter 11 & 12 – Enterprise Architectures and Networks. Telecommunications, Mobile Technology Enterprise Architectures:  What is an Enterprise Architecture? o It includes the plans for how an organization will build, deploy, use, and share its data, processes, and IT assets.  What are the skills necessary for an enterprise architect (EA)? o A person grounded in technology, fluent in business, a patient diplomat, and provides the important bridge between IT and the business. o You will be dealing with a lot of people by being an enterprise architect, you need organizational skills, great interpersonal skills to deal with people and problems. You need business skills to be able to communicate in the business world, and you need programming skills, as well as other IT-related skills.  Enterprise Architectures Components o Data (Information) architecture  Backup and Recovery  Disaster Recovery  Information Security o Infrastructure architecture  Flexibility  Scalibility  Reliability  Availability  Performance o Application architecture  Web Services  Open Systems Data Architecture - Backup and Recovery o If there is a crash you can lose information, money, clients and time trying to figure out what happen. o You can lose business intelligence, which may have put you above your competitors. o Natural disasters and human-made disasters. o Backup – an exact copy of a system’s information o 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 - Failover - - Disaster Recovery o Disaster Recovery plan: - A detailed process for recovering information or an IT system in the event of a catastrophic disaster such as a fire or flood. o Disaster recovery cost curve – charts (1) the cost to the organization of the unavailability of information and technology and (2) the cost to the organization of recovering from a disaster over time - Hot site  Systems, technology in place so the employees can just move to the new location and start working again. - Cold site  Employees would move to a new location and keep working but they would have no systems and technology. - Information Security o A good data architecture includes: - A strong data security plan - Managing user access - Up to date antivirus software and patches Application Architecture o Application architecture – determines how applications integrate and relate to each others. - Web Services o Providing services online, and is accessible anywhere there is internet access. (Remote access). Without web services you need to integrate the different information systems, and try to work around the code change. o Web-services – contain a repertoire of Web-based data and procedural resources that use shared protocols and standards permitting different applications to share data and services. o Interoperability – the capability of two or more computer systems to share data and resources, even though they are made by different manufacturers. - Open Systems o A broad, general term that describes nonproprietary IT hardware and software made available by the standards and procedures by which their products work, making it easier to integrate them. - Allow systems to seamlessly share information - Capitalize on enterprise architectures - Eliminate proprietary systems and promote competitive pricing. o Grid computing is an aggregation of geographically dispersed computing, storage, and network resources, coordinated to deliver improved performance, higher quality of service, better utilization, and easier access to data. - Example: There is different information on each grid. It can be creating a supercomputer by connecting computers together, that performs much better than an individual component or individual computer alone.. Google depends on grid computing because it connects many servers all over the place, and improves performance to make connections between computers, storage devices and servers, etc. o Cloud computing is a form of client/server computing operating over the Internet where the term “cloud” is used as a metaphor for the term “Internet”. You would be doing everything on the Internet without having the system or the data on your computer.
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