The term “Sofware as a Service” is closely linked to the concept of Cloud, where the suffix as a service is associated with each of its key component: platform, infrastructure, data, network. In this trend “everything as a service”, which impacts the e-commerce world from time, software is a ubiquitous and indispensable component. The talk has deepened some operational issues, including: – How do you design the architecture of a SaaS compared to a “traditional” software – How release and manage a SaaS with DevOps methodologies – What are the pros and cons of this model and the emerging trends (Docker and microservices)