grad-is-success
IS Success Model (DeLone & McLean)
Overview
The DeLone and McLean IS Success Model (1992, updated 2003) identifies six interdependent dimensions of IS success: System Quality, Information Quality, Service Quality, Intention to Use/Use, User Satisfaction, and Net Benefits. These dimensions form a causal chain with feedback loops — net benefits reinforce (or undermine) subsequent use and satisfaction.
When to Use
- Evaluating overall effectiveness of an information system
- Diagnosing user dissatisfaction or low system utilization
- Building a measurement framework for IS project post-implementation review
- Comparing alternative systems across multiple quality dimensions
When NOT to Use
- Pre-development requirements gathering (use requirements engineering methods)
- Technology acceptance prediction before deployment (use TAM/UTAUT)
- Measuring individual task performance only (use Task-Technology Fit)
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