Since the game has been released on so many platforms and requires an internet connection to make, it would only make sense that the game has full crossplay support at launch.
Thankfully, you can play Evil Dead: The Game with any of your friends regardless of what platform they're playing on. Whether you're playing across consoles or even PC to console, you and your friends will be able to hop online together seamlessly.
This means that when you're playing matches online with strangers, you'll be matched with opponents playing on a variety of consoles, not just the one you're accessing the game from. There will be little symbols next to the usernames of your competitors indicating which platform they're accessing the game from.
You can also add friends to your game by looking up their username on whatever platform they're accessing the game from to invite them to your session.