What is the equivalent of react context in glimmerjs?

I've been using react for the past three years and just watched a few talks about ember and glimmer and got interested in glimmer. So excuse my ignorance if the question doesn't make sense.

What will be an equivalent of a global state / context in a glimmer app? What I'm looking for is a @tracked data which can be accessed deep in the component tree without passing it as argument at each level. Think redux without all those ceremonial action/action-creator/reducer.

A single global atom with bunch of functions to immutably modify it and re-actively see the change on the component tree.