API Development & Testing Certification

Module 1: Introduction to APIs

• API fundamentals
• API architecture
• Client-server communication
• API use cases
• Web services
• API lifecycle

Module 2: HTTP Fundamentals

• HTTP protocol
• Requests and responses
• HTTP methods
• Status codes
• Headers
• Content types

Module 3: REST API Architecture

• REST principles
• Resources
• URIs
• Stateless communication
• Representations
• RESTful design

Module 4: API Design Principles

• Resource modelling
• Endpoint structure
• Naming conventions
• Request design
• Response design
• API consistency

Module 5: Building API Endpoints

• Route creation
• Request parameters
• Query parameters
• Path parameters
• Request bodies
• Response generation

Module 6: JSON & Data Exchange

• JSON structure
• Objects and arrays
• Serialization
• Deserialization
• Data formatting
• Payload management

Module 7: Input Validation

• Request validation
• Required fields
• Data types
• Validation rules
• Invalid requests
• Validation responses

Module 8: Error & Exception Handling

• API errors
• HTTP error codes
• Exception handling
• Standard error responses
• Error messages
• Logging errors

Module 9: Database Integration

• Database connectivity
• CRUD operations
• Data models
• Queries
• Transactions
• Data persistence

Module 10: API Authentication

• Authentication concepts
• API keys
• Basic authentication
• Token-based authentication
• JWT concepts
• Authentication workflows

Module 11: API Authorisation

• Access control
• Roles
• Permissions
• Protected endpoints
• Resource-level access
• Authorisation failures

Module 12: API Security

• Common API vulnerabilities
• Secure data handling
• HTTPS awareness
• Input sanitisation
• Rate limiting
• Security practices

Module 13: API Documentation

• Documentation principles
• OpenAPI concepts
• Swagger
• Endpoint documentation
• Request examples
• Response documentation

Module 14: Introduction to API Testing

• Testing objectives
• Functional testing
• Integration testing
• Positive testing
• Negative testing
• Test scenarios

Module 15: API Testing with Postman

• Postman workspace
• Creating requests
• Collections
• Environments
• Variables
• Test execution

Module 16: Request & Response Validation

• Status code validation
• Header validation
• Response body validation
• Schema validation
• Data verification
• Error response testing

Module 17: Automated API Testing

• Automated test concepts
• Test scripts
• Assertions
• Reusable tests
• Collection execution
• Regression testing

Module 18: API Mocking & Test Data

• Mock APIs
• Mock servers
• Test data
• Simulated responses
• Dependency isolation
• Testing incomplete services

Module 19: API Performance Testing

• Response time
• Throughput
• Load testing concepts
• Stress testing concepts
• Performance bottlenecks
• Performance analysis

Module 20: API Security Testing

• Authentication testing
• Authorisation testing
• Input validation testing
• Injection awareness
• Rate-limit testing
• Security test scenarios

Module 21: API Versioning, Monitoring & Maintenance

• API versioning
• Backward compatibility
• Logging
• Monitoring
• Error tracking
• API maintenance

Module 22: End-to-End API Engineering

• API requirements
• Endpoint design
• API implementation
• Documentation
• Functional and automated testing
• Deployment readiness