# Overview

The Traveler mobile SDKs come in three tiers, to allow maximum customization.

![SDK Tiers](/files/-LaLGflev38_OIqEj8UC)

## Core (TravelerKit) 

This layer is the main API layer that is used to fetch catalogs, item details, all the way to placing an order and making a booking.

The core layer uses a facade object serving as a front-facing interface masking more complex underlying code. This makes it easy and consistent to integrate on multiple platforms.

## UI (TravelerKitUI)

This layer will contain helpful UI components as well as entire flows for your convenience and ease of integration. We highly recommend using as much of these flows and UI elements as possible for the best user experience.

## Payment Provider

In order to facilitate collection of payments, we currently only support Stripe, and as such have bundled all our Stripe integration components into one SDK to alleviate the developer from having to go through that process. 


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