If you have ever launched a Service Portal or Workspace and watched search return stale, noisy, or risky results, this guide is for you. You will see how ServiceNow AI Search actually works end to end (data to index to sources to profiles to applications), why real projects break, and how to design relevance, governance, and persona-based experiences on purpose. Includes a practical demo walkthrough, tuning patterns, and architectural guardrails you can apply immediately.