Zephyr Professional Practice Test

What key principle underlies microservices architecture?

1. Combining all services into a single unit

2. Decomposing applications into discrete components

3. Using a monolithic structure for ease of deployment

4. Creating a larger, simpler service structure

The correct answer is: Decomposing applications into discrete components

The key principle that underlies microservices architecture is decomposing applications into discrete components. This approach allows for the development of independent services that can be deployed, managed, and scaled individually. Each microservice is focused on a specific business capability and communicates with other services through well-defined APIs. This modular design enhances flexibility and allows teams to work on different services simultaneously, promoting better collaboration and faster delivery. Scaling becomes more efficient, as services can be scaled individually based on demand, rather than scaling a whole monolithic application. By focusing on discrete components, organizations can also adopt a variety of technologies and programming languages best suited for each service. This approach contrasts sharply with options that suggest combining services into a single unit, using a monolithic structure, or creating a larger and simpler service structure, which do not align with the core principles of microservices. Instead, microservices encourage a decentralized, iterative process that promotes agility and innovation.