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System and Infra Structure Life Cycle Management

Chapter No. 3. System and Infra Structure Life Cycle Management.

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System and Infra Structure Life Cycle Management

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  1. Chapter No. 3 System and Infra Structure Life Cycle Management To ensure that the IS auditor understand and can provide assurance that the management practices for the development/acquisition, testing, implementation, maintenance and disposal of system and infrastucture will meet organization objectives

  2. Description of Traditional SDLC phases : • Feasibility Study : • It concerned with analyzing the benefits and solution for the identified problem area • Strategic benefits of implementing new system • Identifies and quantifies the cost saving • Estimates the payback period • Shows projected revenue on investment (ROI) • Intangible benefits

  3. Description of Traditional SDLC phases : • Requirement Definition : Identification and specification of the business requirements of the system chosen for development during feasibility study. • Descriptions what a system should do • How user will interact with system • Conditions under which the system will operate • Information criteria the system should meet

  4. Description of Traditional SDLC phases : • Design : Depending on the complexity of the system, several iteration in defining system level specification may be needed. Key factors in this sector • User Involvement in the design • Software baseline • IS Auditors Involvement

  5. Description of Traditional SDLC phases : • Development : Key activities : • Coding and developing programs and system level documents • Debugging and testing program developed • Developing program to convert data from old to new system • Creating procedures to handle transition to the new system • Training selected users • Ensure modifications are documented and applied accurately and completely • IDE • Program Languages • Program Testing

  6. Description of Traditional SDLC phases : • Implementation : Key activities : • Implementation planning • End user training • Large scale data conversion • Cutover (Go-live) Techniques • Parallel Changeover • Phased Changeover • Abrupt Changeover

  7. Description of Traditional SDLC phases : • Post Implementation Review :

  8. Description of Traditional SDLC phases : • Risk Associated with Software Development: • Within Project • With suppliers • Within organization • External Environment

  9. E-commerce: • E-Commerce Models: • B2C • B2B • B2E • B2G • E-Commerce Architecture • One Tier • Two Tier • Three Tier • Multi Tier • E-Commerce Risks

  10. E-commerce: • EDI • Traditional EDI • Web based EDI • EDI Risk and Controls • Electronic Fund Transfer • CRM - 195 • SCM - 195

  11. Alternative Forms of Software Project Organization • 3.7.1 Agile Development - 196 • 3.7.2 Prototyping - 196 • 3.7.3 Rapid Application Development (RAD) -198

  12. Change Management Process Overview - 207 • RFC – Request for Change Document – 208 • Deploying the Changes • Documentation • Testing Changed Program • Auditing Program Changes • Emergency Changes • Deploying Changes Back to into production • Change Exposures (Unauthorised Changes)

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