# Connectors

Connectors are specialized entities in ProcessMIX that are used for communication, interaction, and integration between ProcessMIX applications and external data sources, services and components.

Connectors encapsulate technical details of how to integrate with an external system and offer configuration parameters to set them up easily and without technical expertise. Once connector is created and configured, a call to it can be added as a node (execution step) to any ProcessMIX flow.

The following standard connectors exist on the platform:

* [DB connector](connectors/db-connector) — for calling external and built-in relational databases (RDBMS)
* [REST connector](connectors/rest-connector) — for calling external web services using HTTP REST protocol
* [SOAP connector](connectors/soap-connector) — for calling external web services using XML-based SOAP protocol
* [S3 connector](connectors/s3-connector) — for storing and retrieving large objects such as files in Amazon S3 service
* [EVM Blockchain connector](connectors/evm-blockchain-connector) — for making operations with Ethereum's EVM blockchain services
