
Tier 0, also known as Level 0, is the self-serve IT support level.
Also referred to as Level 0 IT support, Tier 0 is the ITSM designation for what most organizations call their self-service layer. These are the tools and resources users turn to before they ever contact a human agent. It usually includes FAQs, knowledge bases, online forums, and automated (AI-based, such as Chatbots) solutions. And, it is the fastest and least expensive type of IT support to deliver, and when done well, it resolves the majority of routine requests automatically.
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