front matter

preface

While working at WSO2 for more than a decade, we’ve seen how the integration domain evolved over time from SOAP-based services to JSON/RESTful services and then to microservices. We spent most of our early days at WSO2 contributing to the Apache Axis2 project, which was a popular SOAP engine in those days, and to the Apache Rampart project, which implements many Organization for the Advancement of Structured Information Standards (OASIS) standards for web services security. Even though SOAP was quite promising in those days, it started to fade rapidly over time, and clearly JSON/RESTful services had won. Most of the microservice implementations we see today follow RESTful design principles.

In the last two to three years, ...

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