What is Angular workspace and monorepo architecture?

An Angular workspace can contain multiple projects (apps and libraries) managed together, enabling monorepo architectures. Nx monorepo with Angular: Nx is the most popular tool for Angular monorepos, extending the Angular CLI with: project-aware caching (only rebuild changed projects), dependency graph visualization, affected commands (only test/lint/build projects changed since last commit), code generators for libraries, and module boundary enforcement. Angular workspace (built-in): one workspace can have multiple apps: ng new my-workspace --create-application=false; cd my-workspace; ng generate application admin-portal; ng generate application customer-portal;. And shared libraries: ng generate library shared-ui; ng generate library auth; Libraries are importable as if npm packages via TypeScript path aliases in tsconfig.json: "@myorg/shared-ui": ["dist/shared-ui"]. Library types: feature libraries (feature code for one app), UI libraries (shared components), data-access libraries (services, state management), utility libraries (pure functions, models). Enforcing boundaries: use ESLint import rules or Nx module boundary rules to prevent cross-domain imports (admin features can't import customer features). Publishing libraries: build with ng build shared-ui → produces dist/ with compiled code; publish to npm or use Nx Release for versioned publishing. Benefits: code sharing without npm publishing, atomic commits across projects, consistent tooling, single node_modules.