Component Diagram Examples & Templates

Component diagrams show the organization and dependencies among software components, including their interfaces and relationships.

When to Use Component Diagrams

Use component diagrams to visualize system architecture, show how different modules interact, document microservices architecture, and plan system decomposition.

Common Use Cases:

  • Microservices architecture
  • System component organization
  • Module dependency mapping
  • Service-oriented architecture (SOA)
  • Plugin and extension systems

Featured Component Diagram Examples

Explore 3 real-world component diagram examples with detailed explanations and PlantUML source code.

Smart Home IoT SystemSmart Home IoT SystemMobile AppCloud ServiceHome HubSmart DevicesSmart Home AppCloud PlatformDevice DataSmart HubSmart LightsThermostatSecurity CameraDoor LockCore Components:- Mobile control interface- Cloud-based management- Central home hub- Connected smart devicesControl & StatusStore DataDevice CommandsControlControlControlControl

Smart Home IoT System

A comprehensive component diagram illustrating the architecture of a modern Smart Home IoT system, showing the interaction between mobile applications, cloud services, home networking equipment, and various IoT devices.

View Example
Ride-Sharing App Service ArchitectureRide-Sharing App Service ArchitectureUser InterfacesAPI LayerBackend MicroservicesData LayerExternal ServicesRider AppDriver AppAPI GatewayTrip Management ServiceUser & Auth ServiceBilling ServiceShared DatabasePayment ProcessorMapping & Geolocation APIHandles matchingriders with drivers,trip tracking, androute optimizationManages authentication,user profiles, anddriver verificationProcesses payments,handles pricing,and manages refundsHTTPS/REST API(Trip requests,Booking status)HTTPS/REST API(Trip acceptance,Location updates)Route trip requestsRoute auth requestsRoute payment requestsStore trip dataStore user profilesStore transaction dataProcess payments(Stripe, Adyen)Get routes & locations(Google Maps)Validate usersCalculate fareGet payment methods

Ride-Sharing App Service

A component diagram showing the high-level architecture of a ride-sharing service like Uber or Bolt, illustrating the separation between user-facing applications and backend microservices that handle the core logic of booking and managing rides.

View Example
Video Streaming ServiceVideo Streaming ServiceUpload SystemStorageStreaming PlatformContent DeliveryUser AppsVideo UploadVideo StorageStreaming ServiceCDNWeb/Mobile AppCreatorViewerCore Flow:- Creators upload content- Videos stored in cloud- Users request streams- CDN delivers video globallyUpload VideosStore ContentBrowse & WatchRequest StreamGet VideoDeliver ContentStream Video

Video Streaming Service

A component diagram illustrating the architecture of a video streaming service like Netflix or YouTube, highlighting the complete journey of a video file from upload and processing to its final delivery to viewers through a global content delivery network.

View Example

How to Create Component Diagrams in PlantUML

With Plantdiagrams AI-powered editor, you can create professional component diagrams in seconds. Simply describe what you want to diagram, and our AI will generate the PlantUML code for you.

1

Open the Editor

Start with our free online PlantUML editor - no installation required.

2

Describe Your Diagram

Use our AI assistant to generate component diagram code from natural language.

3

Customize & Export

Edit the diagram with live preview, then export or share with your team.

Need More Examples?

Explore our full gallery of PlantUML diagram examples across all diagram types and industries.