Comparing Service-based Architectures

Microservice architectures are quite popular, described as “SOA done correctly”. But what are the real differences between SOA, Microservice, and service-based architectures? What about middle ground between the shared everything of SOA versus shared nothing of microservices? This talk explores the similarities and differences between various service-oriented architectural styles. I describe the characteristics of SOA, microservices, and hybrid service-based architectures, along with the considerations and constraints for each. I also discuss specific engineering practices, orchestration styles, reuse strategies, and migrating from monolithic applications to service-based or microservice architectures. No one architecture can solve every problem, and many projects take on more complexity than necessary by choosing the wrong paradigm.