# Mojaloop Hub Legacy Components - PI7

The following component diagram shows the break-down of the Mojaloop services and its micro-service architecture for pre PI7:

![Mojaloop Architecture Overview PI7](broken-reference)

*Note: Colour-grading indicates the relationship between data-store, and message-streaming / adapter-interconnects. E.g. `Central-Services` utilise `MySQL` as a Data-store, and leverage on `Kafka` for Messaging*
