Tiered support organizes a support function into distinct levels—commonly Tier 0 through Tier 3—where each tier handles issues of increasing complexity and technical depth.
- Tier 0: Self-service (help center articles, chatbots, community forums)
- Tier 1: Frontline agents handling common, repeatable issues
- Tier 2: Experienced agents or SMEs addressing product-specific or complex problems
- Tier 3: Engineers, developers, or vendors resolving bugs or infrastructure issues
The model improves efficiency by ensuring that simple issues are resolved quickly and cheaply at lower tiers, while specialized (and expensive) resources are reserved for genuinely complex problems. Key metrics for evaluating tier health include escalation rate (percentage of tickets moving up a tier) and FCR (First Contact Resolution) at each level. Poorly defined escalation criteria are a common failure point, leading to unnecessary hand-offs and customer frustration.