MULE has a modular architecture that consists of components containing business logic, inbound routers to route incoming messages to services, outbound routers to redirect outputs to other services for load balancing or policy-based routing, endpoints to connect components to external systems, transformers to transform data formats before sending to components, and transports to manage connections between technologies using protocols like HTTP, JMS, and FTP.

1. MULE Architecture and modules

2. ARCHITECTURE

3. MODULES
● Components: Any object, POJO, REST
services, EJBs, Spring Bean, etc. They are
those containing business logic.

4. MODULES
● Inbound routers: Responsible for controlling the
message received to route it to a service.

5. MODULES
● Outbound routers: Responsible for redirect the
output to another service. It can be used as a
load balancer or policy-based routing.

6. MODULES
● Endpoints: Used to connect components with
other external systems.

7. MODULES
● Transformers: are responsible for transforming
the data format to redirect it to the input of a
component.

8. MODULES
● Transportation: They are responsible for
managing how to connect between different
technologies using different transport protocols:
HTTP, JMS, FTP, etc.