What architecture is Sitecore XM Cloud built upon?

Sitecore XM Cloud is built upon a microservices architecture, which is characterized by its ability to allow different components of the application to be developed, deployed, and scaled independently. This architecture promotes flexibility, as it supports continuous integration and delivery practices, facilitating faster iterations and deployments. In a microservices setup, each service focuses on a specific business function and interacts with others through well-defined APIs. This modular approach enhances scalability and resilience because individual services can be modified or replaced without requiring changes to the entire system, thus supporting an agile development environment.

Furthermore, microservices help in isolating faults since the failure of one service does not impact the entire application, ensuring a more robust user experience. This architecture is particularly beneficial for cloud environments, as it can seamlessly leverage cloud-native capabilities for managing resources and scaling.

In contrast, a monolithic architecture represents a single-tiered software application in which different components are interconnected and interdependent, potentially leading to challenges in scalability and deployment. Serverless architecture, while allowing developers to write and deploy code without managing server infrastructure, does not inherently provide the same level of modularity as microservices. Hybrid architecture combines aspects of both monolithic and microservices approaches but does not align with the pure microservices principle embraced by Sitecore