In LARGE Scrum environments, additional artefacts are necessary to ensure transparency throughout the whole organisation.

Company BurnDown Chart

Some companies create an enterprise wide BurnDown chart.

Just like a Scrum Team needs a Product Backlog and a Taskboard, a scaled Scrum Team requires a Company Product Backlog and a Company ScrumBoard. In most cases, this does not yet refer to the whole company, but rather a department or at least more than 2 Teams.