Layered Architecture

Layered Architecture image
Layered architecture is modular, breaking the system into distinct areas, such as presentation, business logic, and data. Common in web applications.

Client-Server architecture essentially has two main components, requests and provide. These can also be used for simple web applications, such as emails or network applications.

Event-driven architecture sounds as it seems. Communication between components is driven by events. The system reacts to state changes, inputs and actions. These are useful for notification and alert systems.

Microservices are an architectural model that consists of many small components or services. Often seen in platforms that need different services running like user accounts, order processing and product catalogues.
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