Yi.Abp.Admin is a full-stack enterprise administration framework built on ASP.NET Core (ABP vNext framework) with multiple Vue 3 frontends (Pure Admin, Vben5, RuoYi, and a BBS variant). It provides RBAC, multi-tenancy, audit logging, setting management, code generation, and OAuth support (QQ, Gitee). The backend follows Domain-Driven Design with modules like Yi.Framework.Rbac and Yi.Framework.TenantManagement, using SqlSugar ORM as a replacement for ABP's default EF Core. The frontends feature dynamic route generation from backend permissions, reusable UI components (dialog, cropper, table bar, form API), and state management with Pinia. The monorepo also includes a CLI tool for scaffolding new modules. Despite some duplication across frontends and ABP customizations that may cause upgrade friction, the codebase demonstrates solid engineering with well-separated concerns and several independently usable components.