Class Diagram Templates
Class diagrams describe the types in your system and how they relate — inheritance, composition, associations. Use them during design to communicate domain models, or after the fact to onboard new engineers to an unfamiliar codebase. Best for OO systems; less useful for purely functional code.
- User Authentication FlowA class diagram template mapping login, session management, and logout sequences, ideal for developers and architects designing secure authentication systems.
- Microservices ArchitectureA class diagram template mapping microservices boundaries, service interfaces, and communication patterns, ideal for software architects and backend engineers.
- Kubernetes DeploymentA class diagram template mapping Kubernetes Pods, Services, Ingress, and rollout relationships, ideal for DevOps engineers and platform architects.
- OAuth 2.0 AuthorizationA class diagram template illustrating the OAuth 2.0 authorization code grant flow, ideal for developers and architects designing secure authentication systems.
- CI/CD PipelineA class diagram template mapping CI/CD pipeline stages from code commit to production deployment, ideal for DevOps engineers and software architects.
- Database MigrationA class diagram template showing zero-downtime database migration patterns, ideal for backend engineers and architects planning schema changes in production systems.
- Event-Driven ArchitectureA class diagram template mapping producers, brokers, and consumers in event-driven systems, ideal for software architects and backend engineers.
- REST API Request LifecycleA class diagram template mapping the full REST API request lifecycle from client call through middleware, controllers, and database layers, ideal for backend developers and architects.
- Git Branching StrategyA class diagram template mapping Git branching workflows like GitFlow and trunk-based development, ideal for dev teams documenting version control strategies.
- Incident Response RunbookA class diagram template mapping detect, triage, mitigate, and post-mortem phases for security engineers and DevOps teams building incident response runbooks.
- Product Launch PlanA class diagram template mapping Beta, Marketing, GA, and post-launch phases, ideal for product managers and engineers planning structured product releases.
- Customer Feedback LoopA class diagram template mapping the collect, analyze, act, and communicate stages of a customer feedback loop, ideal for product managers and CX teams.
- User Onboarding FlowA class diagram template mapping the user onboarding flow, ideal for developers and UX architects designing first-run experiences for new users.
- E-commerce Checkout FunnelA class diagram template mapping the e-commerce checkout funnel from cart to order confirmation, ideal for developers and solution architects designing online store systems.
- Feature RolloutA class diagram template mapping feature rollout stages—internal, beta, percent rollout, and GA—ideal for product and engineering teams planning controlled releases.
- A/B Testing WorkflowA class diagram template mapping the A/B testing workflow—hypothesis, design, ship, and decide—ideal for product managers, engineers, and data analysts.
- Code Review ProcessA class diagram template mapping the PR lifecycle from open to merge, ideal for engineering teams documenting review workflows and system design.
- Agile Sprint CycleA class diagram template mapping the Agile sprint cycle—Plan, Build, Review, and Retro—ideal for Scrum masters, developers, and agile coaches.
- Hiring PipelineA class diagram template mapping the hiring pipeline from sourcing to offer, ideal for HR teams, recruiters, and engineering leads designing recruitment systems.
- Customer Support TriageA class diagram template mapping ticket intake to resolution for support engineers and system architects designing scalable customer support workflows.
- Sales PipelineA class diagram template mapping the sales pipeline from lead to closed-won, ideal for sales engineers, CRM architects, and developers building pipeline systems.
- Project KickoffA class diagram template mapping project kickoff components—charter, stakeholders, plan, and communications—ideal for project managers and business analysts.
- Employee OnboardingA class diagram template mapping employee onboarding structures from day one through 90-day milestones, ideal for HR teams and system architects.
- Change ManagementA class diagram template mapping the propose, review, schedule, and deploy stages of change management, ideal for IT teams and process architects.
- Lead Qualification (BANT)A class diagram template mapping BANT lead qualification attributes and relationships, ideal for sales engineers and CRM architects modeling qualification logic.
- ETL Data PipelineA class diagram template mapping ETL pipeline components—extractors, transformers, and loaders—ideal for data engineers and architects designing scalable data workflows.
- Machine Learning WorkflowA class diagram template mapping ML pipeline stages—data prep, training, evaluation, and deployment—ideal for data scientists and ML engineers.
- Invoice Approval WorkflowA class diagram template mapping the invoice approval workflow—receive, validate, approve, and pay—ideal for finance teams and systems architects.
- Data Warehouse SchemaA class diagram template illustrating star schema structure with fact and dimension tables, ideal for data architects and BI developers designing data warehouses.
- Analytics Event TrackingA class diagram template mapping analytics event tracking from client emit to dashboard, ideal for data engineers, frontend developers, and analytics architects.