> ## Documentation Index > Fetch the complete documentation index at: https://docs.lynxssp.com/llms.txt > Use this file to discover all available pages before exploring further. # Getting Started **Lynx SSP** is a Campaign Management System platform designed to facilitate users in efficiently managing campaign planning, creation, inventory management, performance monitoring, and the creation and downloading of campaign reports. This page assists you in understanding the process, starting from adding DOOH (Digital-Out-of-Home) inventory, connecting the CMS (Content Management System) you use to the Lynx SSP via HTML5, and performing testing to display creative content on the connected DOOH (Digital-Out-of-Home) inventory, as follows: Add New Dooh(digital Out Of Home)inventory Pn Add Your DOOH (Digital-Out-of-Home) Inventory type, to fill in inventory information, select the inventory type you want to add: After adding the DOOH (Digital-Out-of-Home) Inventory, further configuration is required by connecting the added DOOH Inventory with ScreenApp to display creative content and fillers. You can create filler content and connect it to the DOOH (Digital-Out-of-Home) Inventory, as well as check the ScreenApp connection with the DOOH Inventory using the filler content that has been added. After completing the sequence, you can check whether the playback rotation of the filler content is running as intended in the Playlist & Playlog feature.