Advantages of top-down design computer science
Summary
- High deployment coverage in early phases
- Earlier return on investment
- High visibility of organizational changes
- Higher impact to organization
- Tactical, limited coverage
- Delayed return on investment
- Lower impact to overall organization
- Higher deployment costs
Advantages
- User and business awareness of the product. Benefits are realized in the early phases.
- You can replace many manual processes with early automation.
- You can implement password management for a large number of users.
- You do not have to develop custom adapters in the early phases.
- Your organization broadens identity management skills and understanding during the first phase.
- Tivoli Identity Manager is introduced to your business with less intrusion to your operations.
- Your organization realizes a focused use of resources from the individual managed application.
- The first implementation becomes a showcase for the identity management solution.
- When the phases are completed for the managed application, you have implemented a deeper, more mature implementation of the identity management solution.
- Operation and maintenance resources are not initially impacted as severely as with the bottom-up approach.
Disadvantages
- The organizational structure you establish might have to be changed in a later roll-out phase.
- Because of the immediate changes to repository owners and the user population, the roll-out will have a higher impact earlier and require greater cooperation.
- This strategy is driven by the existing infrastructure instead of the business processes.
- The solution provides limited coverage in the first phases.
- A minimal percentage of user accounts are managed in the first phases.
- You might have to develop custom adapters at an early stage.
- The support and overall business will not realize the benefit of the solution as rapidly.
- The implementation cost is likely to be higher.
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