# Admin UI: Front to Backend
The Admin UI interfaces with our microservice based backend, mostly by sending HTTP requests to the Admin Gateway. The gateway is a server that interfaces, proxies, and processes the transmission of data from the user's browser down to the API level, where changes are saved to our databases. A gateway will govern anything from data validation to server-side business logic and complex, multilayered operations.
There are other backend products that the Admin UI will also interface with, like the authentication and uploader services.
See the diagram below for a high level overview of how objects and state are managed on the UI, and how they are then digested through our backend infrastructure.
