Pulumi is an open-source Infrastructure as Code tool that facilitates the integration and coexistence of infrastructure provisioned by different tools, such as CloudFormation, ARM Templates, and Terraform, within the same environment. This is particularly useful for organizations where different teams manage resources using varied tools, as Pulumi allows seamless interaction with existing infrastructure through its StackReference type. Notably, Pulumi enables the retrieval of outputs from these tools, supporting AWS CloudFormation, Azure ARM Templates, and more recently, Terraform state files, including those managed remotely via Terraform Enterprise. By using the RemoteStateReference type in the @pulumi/terraform NPM package, Pulumi programs can dynamically consume outputs from Terraform states, providing flexibility and ease of integration for teams transitioning from other IaC solutions to Pulumi. Pulumi's approach supports the co-management of infrastructure without disrupting existing setups, appealing to teams seeking to adopt it in their current environments.