What is a Domain Service in Domain-Driven Design?

☄️ Master the Modular Monolith Architecture: https://bit.ly/3SXlzSt 📌 Accelerate your Clean Architecture skills: https://bit.ly/3PupkOJ 🚀 Support me on Patreon to access the source code:   / milanjovanovic   What is a domain service? It's a pattern in Domain-Driven Design that helps you encapsulate business logic that doesn't belong to any entity. Domain services are very nuanced; you can apply Domain-Driven Design without them. However, there is value in creating domain services. I'll show you how to implement this Domain-Driven Design pattern in this video. Join my weekly .NET newsletter: https://www.milanjovanovic.tech Read my Blog here: https://www.milanjovanovic.tech/blog Chapters 0:00 Modeling a Users-Followers feature 1:12 Creating the Follower entity 2:45 How tests can give you quick feedback 3:19 Implementing the Domain Service 9:19 Using Domain Events for side effects 12:06 Why do we need Domain Services?