HCP Terraform and Terraform Enterprise introduce project-owned variable sets to provide more flexible control and simplify configuration management.Project-owned variable sets allow users to define variables once and reuse them across multiple workspaces within a project.Previously, variable sets could only be managed at the organization level or workspace level, limiting flexibility.This new feature enables variable sets to be owned at the project level, offering custom permission settings.Teams gain self-service control over their variable sets, reducing dependencies and enhancing access control.Challenges solved by project-owned variable sets include granular permission control and variable reuse within projects.Previously, managing variable sets with project-level permission was not possible, posing security and operational challenges.Workarounds like requesting platform teams to create variable sets or duplicating variables across workspaces were cumbersome.Project-owned variable sets offer three scopes: Global, Project-specific, and Workspace-specific.Benefits of project-owned variable sets include simplified management, granular control, and increased operational efficiency.