Domain Driven Design Mastery

Module 1: Strategic DDD and problem framing

• Ubiquitous language and core domain focus

• Bounded contexts and team aligned boundaries

• Context mapping: partnership, customer supplier, conformist

• Visual collaboration techniques: quick event storming and domain canvases

Module 2: From domain narratives to models

• Commands, policies, and events as storytelling tools

• Capability slices and domain workflows

• Discovering aggregates through invariants and transactional rules

• Aligning models with outcomes and KPIs

Module 3: Tactical building blocks

• Entities and value objects: identity, equality, and immutability

• Aggregates: consistency boundaries and reference patterns

• Domain services: when behavior is not owned by an entity

• Repositories: intent revealing persistence and specs

Module 4: Architecture alignment

• Hexagonal architecture: ports, adapters, and application services

• Application layer vs domain layer responsibilities

• CQRS: where it helps and where it does not

• Event sourcing at a glance: tradeoffs and readiness checks

Module 5: Integrating bounded contexts

• Translation layers and anti corruption layer patterns

• Published language and contracts for interoperability

• Versioning strategies for APIs and messages

• Context mapping to infrastructure choices

Module 6: Process orchestration

• Sagas and process managers modeling long running flows

• Consistency models: eventual, transactional outbox, and idempotency

• Handling duplicates, retries, and timeouts

• Designing for failure and compensations

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