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Introduction to: Information systems architectures and infrastructures

Introduction to: Information systems architectures and infrastructures. A Top-Level View Information System. Managers Users Customers Tech Staff. Payroll Order Entry Inventory Reservations. People. Processes. Accurate Timely Relevant Structured Unstructured. Hardware Software

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Introduction to: Information systems architectures and infrastructures

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  1. Introduction to: Information systems architectures and infrastructures

  2. A Top-Level View Information System • Managers • Users • Customers • Tech Staff • Payroll • Order Entry • Inventory • Reservations People Processes • Accurate • Timely • Relevant • Structured • Unstructured • Hardware • Software • Network Technology Information

  3. Weill IT Infrastructure Graphic

  4. IT Infrastructure (Weill & Vitale 2002) • Foundation of a firm’s IS portfolio • IT components (servers, printers, routers, operating systems, DBMSs, groupware, etc. • Shared IT services (e.g., channel mgmt, security, data management, etc. • Shared standard applications (ERP, CRM, i.e., stable, applications used across the enterprise) • Human IT Infrastructure (the knowledge, skills and experience of the folks that make the infrastructure work)

  5. Thinking About IT Infrastructures: Reach & Range

  6. So why do (or should) we care? • We need to relate the concept of information systems and IT infrastructure to the management and organizational issues that we have been discussing. • We need to relate the design and selection( i.e., the architecture) of the IT infrastructure to the business or strategic needs of the organization. • We need to be able to communicate and educate the user community regarding these systems and services so that they can meaningfully participate in the IT decisions that impact business operations. • We need to be able to communicate and educate the user community regarding the implications that IT architecture and infrastructure decisions have for the organization.

  7. Investing in Infrastructure: Four Views • No view: no recognition of requirement for firm-wide infrastructure. • Utility view: infrastructure is important but key focus is on minimizing costs • Dependent view: Firm recognizes that infrastructure supports current business strategy and is expected to support synergy between business units • Enabling view: Implies over-investment in infrastructure with eye toward maximizing flexibility to implement new capabilities.

  8. Infrastructure Issues • Infrastructure presents real challenges for IT management in terms of: • Identifying what should be included in the infrastructure • Aligning infrastructure with strategy • Selection and enforcement of standards • Budgeting • Governance: who makes the calls? • No “right” answers

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