Modern .NET 8 Development, Enterprise Architecture, and Progressive Migration from .NET Framework Training Course

Overview of the Modern .NET Platform for government systems

• Examination of the .NET 8 runtime, Software Development Kit (SDK), and unified platform capabilities
• Evaluation of the technological evolution from .NET Framework through .NET Core to .NET 8 and subsequent versions
• Fundamentals of project architecture, target framework specification, and multi-targeting strategies for government applications
• Configuration of development environments and essential tooling for secure software engineering

Modern C# Programming Practices and Language Standards

• Implementation of records, init-only setters, and immutable data structures to ensure data integrity
• Utilization of enhanced pattern matching and switch expressions for robust control flow
• Application of nullable reference types and compiler-enforced safety measures to reduce runtime errors
• Adherence to asynchronous programming standards (async/await) and memory-efficient streaming techniques
• Deployment of generic math capabilities, static abstract members in interfaces, and high-performance Application Programming Interfaces (APIs)
• Preparation of codebases for compatibility with C# 12/13 features within the .NET 8 environment for future-proofing government software

ASP.NET Core Fundamentals and Application Initialization

• Configuration of the host builder, middleware pipeline, and request processing lifecycle
• Strategic selection between Minimal APIs and controller-based architectures based on operational requirements
• Management of configuration providers, environment-specific settings, and secure secrets handling for sensitive government data
• Implementation of static file serving, routing rules, and endpoint conventions
• Configuration of the dependency injection container and management of service lifecycles to optimize resource utilization

RESTful API Design and Development Standards

• Adherence to REST maturity models, resource modeling principles, and Uniform Resource Identifier (URI) design standards
• Correct implementation of HTTP methods, status codes, and content negotiation protocols
• Rigorous request validation, model binding, and integration with FluentValidation for data integrity assurance
• Strategies for versioning APIs serving both public citizens and internal agency stakeholders
• Comprehensive API documentation using OpenAPI specifications and Swagger UI for transparency and accessibility
• Execution of integration tests utilizing TestServer and WebApplicationFactory to ensure service reliability

Enterprise Dependency Injection and Inversion of Control Principles

• Mastery of constructor injection, service lifetime management, and prevention of captive dependencies in government systems
• Application of decorator and factory patterns using the native dependency injection container
• Integration with Scrutor and other third-party Dependency Injection libraries as needed for specific agency requirements
• Organization of modular service registrations aligned with feature-based architectural boundaries
• Management of cross-cutting concerns through middleware implementation and filter configurations

Logging, Configuration Management, and Centralized Error Handling

• Implementation of structured logging using Microsoft.Extensions.Logging and Serilog for audit trails and monitoring
• Configuration of log levels, scopes, enrichment fields, and sink destinations to meet compliance recording standards
• Deployment of exception middleware and global error handling pipelines to maintain system stability
• Generation of ProblemDetails responses compliant with RFC 7807 standards for standardized error reporting
• Integration of health checks, telemetry data, and observability hooks for proactive system monitoring
• Implementation of correlation IDs and preparation for distributed tracing to enhance troubleshooting capabilities

Enterprise Software Architecture for .NET Solutions in the Public Sector

• Application of layered, hexagonal, and clean architecture principles to ensure modularity and testability
• Utilization of Domain-Driven Design building blocks within the .NET ecosystem for complex business logic
• Implementation of Command Query Responsibility Segregation (CQRS) and mediator patterns using MediatR
• Deployment of repository and unit-of-work patterns with Entity Framework Core for data access management
• Adoption of vertical slice architecture to enhance feature cohesion and reduce coupling
• Evaluation of architectural trade-offs among monolithic, modular monolith, and microservices approaches for government deployment contexts

Web Application and API Security Compliance

• Configuration of authentication schemes including JSON Web Tokens (JWT), OAuth2, OpenID Connect, and cookie-based flows for identity management
• Enforcement of authorization policies, claims-based access controls, and resource-based guards to protect sensitive information
• Implementation of HTTPS enforcement, HTTP Strict Transport Security (HSTS), and secure header middleware to meet cybersecurity baseline requirements
• Execution of input sanitization, output encoding, and mitigation strategies aligned with the OWASP Top 10 vulnerabilities
• Management of rate limiting, Cross-Origin Resource Sharing (CORS) policies, and anti-forgery token handling to prevent abuse
• Secure secret management via Azure Key Vault and environment-driven rotation protocols for credential protection

Code Quality Assurance and Maintenance Best Practices

• Enforcement of coding standards through EditorConfig and dotnet format utilities to ensure consistency across development teams
• Integration of static analysis tools, including Roslyn analyzers and SonarQube, to identify code defects and security risks early
• Development of unit tests using xUnit frameworks with mocking capabilities via Moq or NSubstitute for reliable test isolation
• Execution of integration and contract testing within Continuous Integration (CI) pipelines to validate system integrity
• Application of refactoring techniques for the maintenance and modernization of legacy modules

Documentation, API contract management, and knowledge-sharing practices to support long-term government project sustainability

Legacy Modernization Strategy: Assessment of .NET Framework Applications

• Portfolio analysis strategies to classify applications based on criticality, technical complexity, and business value for prioritization
• Utilization of the .NET Upgrade Assistant and compatibility analyzers to identify migration requirements for government software
• Identification of deprecated APIs, platform-specific dependencies, and third-party library gaps that require replacement or workarounds
• Assessment of Windows-specific API dependencies and considerations for Windows Communication Foundation (WCF) migration to modern standards
• Development of a risk-based migration roadmap aligned with agency IT strategic goals for government transition planning

Progressive Migration and System Coexistence Techniques

• Application of the Strangler Fig pattern to incrementally replace legacy subsystems with modern components without service interruption
• API-first migration strategies involving the exposure of existing .NET Framework domains via RESTful facades to facilitate gradual transition
• Implementation of message-based bridging using technologies such as RabbitMQ, Azure Service Bus, or Kafka for asynchronous communication between systems
• Strategies for shared database coexistence and schema versioning to maintain data consistency during migration phases
• Operational strategies for running .NET Framework and .NET 8 applications side-by-side within the same infrastructure environment
• Approaches to containerizing modern components while maintaining legacy services on Internet Information Services (IIS) to optimize resource usage

Moderation Lab: Practical Migration Execution and Review

• Practical application of the Upgrade Assistant to a representative legacy project to demonstrate migration workflows for government developers
• Refactoring procedures for converting Web Forms or WCF services into ASP.NET Core APIs aligned with modern architecture standards
• Implementation of dependency injection, structured logging, and centralized error handling in the newly migrated solution to ensure operational robustness
• Integration of authentication and authorization mechanisms into the new API surface to maintain security compliance

Verification of system coexistence through comprehensive end-to-end integration testing to validate functional parity for government systems

• Post-lab review, questions and answers, and guidance on post-training modernization planning to support long-term agency IT transformation goals