Horizon is ServiceNow's design system, centralizing components, patterns, and Figma libraries for building on the ServiceNow platform, covering both Workspace (tabbed, multi-record agent views) and Service Portal (customer-facing catalogs and knowledge bases).
It's strongest for enterprise workflow and case-management patterns specifically, "playbooks" (guided workflows for resolving issues) are a distinctive documented pattern most design systems don't cover at all.
Designers building internal workflow, ticketing, or case-management tools who want proven patterns for guided, multi-step resolution processes.
It covers two genuinely different contexts, internal agent workspaces and customer-facing portals, worth checking which section applies before assuming one pattern fits both.
ServiceNow's centralized design system, with pre-built components for enterprise apps.