https://wccftech.com/stadia-state-share-hitman-3/

Google promised a lot of innovative features for Stadia prior to launch, with State Share being one of the most interesting. Basically, State Share allows players to share their setup via a link embedded within a video or image. So, for instance, a streamer who just finished up a fun mission could use Share State to allow viewers to experience that mission with the same loadout, objectives, and difficulty. Even if you don’t have access to the mission or certain gear yet, you can still play the Save State without affecting your overall progression. Hitman 3 will be the first game to utilize Save State -- here's how it's going to work...

Steam Owners Must Buy Hitman 2 Again to Transfer Game Saves to EGS