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Difference between Microservices Architecture and SOA

Service-oriented architecture (SOA): It is an architectural pattern in software design and development according to SOA application components provide services to other components via a communications protocol, typically over a network.

Microservices: It is a software architecture style in which large and complex software system are divided into independent collaborating processes communicating with each other using language-agnostic APIs.

Microservices has a special approach of breaking a monolithic application into many smaller services that talk to each other, SOA has a broader scope.

Microservices Architecture and SOA
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Microservices are the kind of SOA we have been talking about for the last decade. Microservices must be independently deployable, whereas SOA services are often implemented in deployment monoliths. Classic SOA is more platform driven, so microservices offer more choices in all dimensions.

SOA-vs-Microservices