<ul data-eligibleForWebStory="true">Software Architecture focuses on linking various tools like methods, classes, packages, and modules.Monolithic applications have single code base, efficient for small to medium-sized applications.Microservices divide responsibilities into independently deployed small services, offering scalability advantages.Modular Monolith (Modulith) combines benefits of monoliths and microservices by breaking app into modules.In Java, moduliths can be implemented through package per business module, Maven/Gradle, or JPMS.