E-commerce Solutions

E-commerce System Diagrams

Diagram examples for e-commerce platforms, online stores, and retail systems. Explore real-world architecture diagrams and create your own with AI assistance.

Why E-commerce Teams Need System Diagrams

Clear Communication

Visualize complex e-commerce systems to align teams and stakeholders on architecture decisions.

Faster Development

Document workflows and processes to accelerate development and reduce misunderstandings.

Better Planning

Plan scalable architectures and identify potential issues before implementation.

E-commerce Diagram Examples

Explore 4 professional diagram examples for e-commerce systems, complete with PlantUML source code and detailed explanations.

Contactless Payment at a Vending MachineContactless Payment at a Vending MachineUserVending MachineCard.PhonePayment GatewayIssuing BankUserUserVending MachineVending MachineCard/Phone(NFC Device)Card/Phone(NFC Device)Payment GatewayPayment GatewayIssuing BankIssuing BankItem SelectionSelect itemCalculate total amountDisplay total & prompt for paymentPayment InitiationTap card/phone on NFC readerTransmit payment informationCapture payment dataAuthorization ProcessRequest Authorization(amount, card details)Route transaction detailsCheck account funds& fraud indicatorsalt[Transaction Approved]Authorization ApprovedForward approval responsePayment Success FlowDisplay "Payment Successful"Activate dispensing mechanismDispense selected itemItem dispensedTransaction Complete(finalize fund transfer)[Transaction Declined]Authorization DeclinedForward decline responsePayment Failure FlowDisplay "Payment Failed"Cancel transaction
Sequence Diagram

Contactless Payment at a Vending Machine

A sequence diagram illustrating the rapid, automated communication that happens when a user pays for an item at a modern vending machine using contactless payment (NFC card or mobile phone).

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PassengerpassengerId: stringname: stringcontactInfo: stringFlightflightNumber: stringdepartureTime: datetimearrivalTime: datetimeFlightDescriptionroute: stringorigin: stringdestination: stringAirplaneserialNumber: stringmodel: stringSeatseatNumber: stringclass: stringBookingbookingId: stringstatus: stringmade by11reserves1111operated by11composed of1manyfollowsmany1
Class Diagram

Flight Reservation System

Class diagram modeling the components of an airline booking system, including passengers, flights, and bookings.

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E-commerce Recommendation EngineE-commerce Recommendation EngineE-commerce PlatformBrowse ProductsView RecommendationsGenerate PersonalizedSuggestionsAnalyze BrowsingHistoryAnalyze PurchaseHistoryRate a ProductTrack User BehaviorUpdate ProductCatalogCalculate SimilarityScoresFilter by AvailabilityCustomerSystemRecommendation AlgorithmCore algorithm that processesuser data to generatepersonalized recommendationsAnalyzes pages visited,time spent, search queries,and click patternsReviews past purchases,order frequency, seasonalpatterns, and price preferencesUser ratings directlyinfluence futurerecommendation qualityDisplays curated productsuggestions based onalgorithm outputinitiatesviewsprovides ratingmonitorsmaintainsensures availabilityexecutescomputes«include»«include»«include»«extend»«extend»«extend»«extend»
Use Case Diagram

E-commerce Recommendation Engine

Use case diagram illustrating the complex interactions within an e-commerce recommendation system, showing how customer actions, system processes, and algorithmic intelligence work together to deliver personalized shopping experiences.

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Pizza Parlor Ordering SystemPizza Parlor Ordering SystemCustomercustomerID: Stringname: Stringphone: Stringaddress: StringplaceOrder(): OrderOrderorderID: StringorderDate: DatetotalPrice: Doublestatus: OrderStatuscalculateTotal(): DoubleaddItem(item: MenuItem, quantity: Integer): voidsetStatus(status: OrderStatus): voidOrderStatusPLACEDPREPARINGBAKINGREADYDELIVEREDCANCELLEDOrderItemquantity: IntegergetSubtotal(): DoubleMenuItemname: Stringprice: DoublegetPrice(): DoublePizzasize: PizzaSizecrust: CrustTypeaddTopping(topping: Topping): voidsetSauce(sauce: Sauce): voidgetPrice(): DoubleSideDishdescription: StringgetPrice(): DoubleDrinkvolume: StringgetPrice(): DoublePizzaSizeSMALLMEDIUMLARGEEXTRA_LARGECrustTypeTHINTHICKSTUFFEDGLUTEN_FREEToppingname: Stringprice: Doublecategory: ToppingCategoryToppingCategoryMEATVEGETABLECHEESESAUCESaucename: Stringdescription: StringAssociation class that linksOrder to MenuItem with quantityCustomizable pizza withmultiple toppings and saucePrice = base price + toppingsAbstract base class forall orderable itemsExample calculation:totalPrice = sum of allOrderItem.getSubtotal()places10..*contains11..*refers to0..*1has10..*has11
Class Diagram

Pizza Parlor Ordering System

A class diagram modeling an online or in-store pizza ordering system where customers can order customizable pizzas, side dishes, and drinks. Demonstrates object-oriented design principles including inheritance, composition, and associations.

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Create Custom E-commerce Diagrams with AI

Don't see exactly what you need? Use our AI-powered PlantUML editor to generate custom diagrams for your e-commerce projects. Simply describe your system, and our AI will create the diagram code for you.

1

Describe Your System

Tell our AI what you want to diagram in plain English.

2

AI Generates PlantUML Code

Get professional diagram code instantly with live preview.

3

Customize & Share

Fine-tune the diagram and share with your team.

Need More Inspiration?

Browse our complete gallery of PlantUML diagrams across all industries and diagram types.