The notion of “software as a service” (SaaS) plays a critical role in building distributed, scalable application platforms. This course arms students with the knowledge and expertise to design and engineer services using modern Web technologies. Based on Service Oriented Architecture (SOA) principles, students will be exposed to various design and implementation methodologies, including microservices and their associated design patterns, and API design and managment. In addition, this course will strengthen students’ data modeling expertise, covering topics on semantic modelling of both simple and complex structures, and its usage in business analysis. The course will also describe the technical standards and technologies that support semantic data modelling. After completing this course, students will be able to (i) describe different architectural design approaches and their role in engineering software. (ii) apply Web service composition techniques in a concrete setting, (iii) be competent in designing, managing, documenting, testing and securing APIs, (iv) understand techniques for semantic modelling of simple and complex structures, as well as their associated technical standards and technologies.