Update architecture.mdx

Author: anorrish

docs/admin/architecture.mdx

@@ -16,6 +16,41 @@ Run cd ./doc/dev/background-information/architecture && ./generate.sh to update
 Note that almost every service has a link back to the frontend, from which it gathers configuration updates.
 These edges are omitted for clarity.
 
+## Service Quick Links
+
+### Core Services
+- [Frontend](#frontend) - Central service that serves the web UI and GraphQL API
+- [Gitserver](#gitserver) - Stores and provides access to Git repositories
+- [Repo-updater](#repo-updater) - Tracks repository states and synchronizes with code hosts
+
+### Search Infrastructure
+- [Zoekt-indexserver](#zoekt-indexserver) - Creates search indices for repositories
+- [Zoekt-webserver](#zoekt-webserver) - Serves search queries against the indexed repositories
+- [Searcher](#searcher) - Handles non-indexed searches for repositories
+- [Syntect Server](#syntect-server) - Provides syntax highlighting for code
+
+### Code Intelligence
+- [Symbols](#symbols) - Extracts and indexes symbol information
+- [Precise-code-intel-worker](#precise-code-intel-worker) - Processes code intelligence data
+- [Worker](#worker) - Runs background tasks across the system
+
+### Data Persistence
+- [Frontend DB](#frontend-db) - Primary PostgreSQL database for core data
+- [Codeintel DB](#codeintel-db) - Database for code intelligence data
+- [Codeinsights DB](#codeinsights-db) - Database for code insights data
+- [Blob Store](#blob-store) - Object storage for large files
+- [Redis](#redis) - In-memory data store for caching and sessions
+
+### External Components
+- [Executors](#executors) - Isolated environments for compute-intensive operations
+- [Code Hosts](#code-hosts) - External systems hosting repositories
+
+### Infrastructure
+- [Observability Infrastructure](#observability-infrastructure) - Prometheus, Grafana, and CAdvisor
+- [Telemetry](#telemetry) - Usage data collection
+- [Cody Architecture](#cody-architecture) - AI-assisted coding components
+- [External Services and Dependencies](#external-services-and-dependencies) - External services Sourcegraph can use
+
 ## Core Services
 
 ### Frontend