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Businesses today need to respond to customer needs at unprecedented speeds. Driven by this need for speed, many companies are rushing to the DevOps movement and implementing Continuous Delivery (CD). I had been implementing DevOps and CD for Paddy Power, a multi-billion-euro betting and gaming company, for four years. I had found that software architecture can be a key barrier. To address the architectural challenges, we tried an emerging architectural style called Microservices. I have observed increased deployability, modifiability, and resilience to design erosion. At the same time, I also observed new challenges associated with the increased number of services, evolving contracts among services, technology diversity, and testing. I share the practical strategies that can be employed to address these new challenges, discuss situations for which Microservices may not be a good choice, and outline areas that require further research.
Lianping Chen (Sun,) studied this question.