Valve has detailed the Steam Deck's Dynamic Cloud Sync system, an ambitious new feature which will make it easier than to swap between platforms without losing progress.
In a blog post published Monday, Valve described the system as allowing players "to seamlessly move between Deck and PC instances of the game without needing to worry about exiting the game on the Steam Deck."
"We anticipate that users will frequently suspend their Steam Deck without exiting the game, as is common with other hand-held gaming devices. With Dynamic Cloud Sync, if they then choose to play on another device (whether a PC or another Steam Deck), their progress will be there waiting for them."
The system works by having Steam automatically upload all modified save game data to the cloud prior to the Deck's entering sleep mode. That cloud save data will then automatically download to the player's PC when they next go to boot the game in question. The Deck will also sweep the cloud for new save data when it wakes up from sleep.
Game developers working with the Deck will have to enable the feature on their games, but it will be free to use.