2025 ITGSS Technical Associate Practice Test – Complete Exam Prep

A microservice architecture is defined as a set of loosely coupled services. This structure enables each service to operate independently, which supports continuous delivery and deployment practices. Each microservice can be developed, deployed, and scaled independently of other services, allowing for greater flexibility and rapid adaptation to changing business needs.

In this architecture, services communicate with each other over well-defined APIs, often using lightweight messaging protocols. This loose coupling is a key characteristic, as it minimizes the interdependencies that are common in monolithic applications, making systems more resilient and easier to manage.

In contrast, other models such as monolithic applications, collections of tightly integrated services, or a single large database do not embody the principles of microservices. Monolithic applications are rigid and not adaptable as changes affect the entire system. Tightly integrated services would imply a level of dependence that contradicts the core tenet of microservices. Additionally, relying on a single large database restricts scalability and can create bottlenecks.