What does the terraform plan command do?

The terraform plan command is essential in the Terraform workflow as it generates an execution plan based on the current state of the infrastructure and the changes that are defined in the configuration files. This command compares the existing state of the infrastructure, which is stored in the Terraform state file, with the desired state as specified in the Terraform configuration files.

When the plan command is executed, it performs a thorough analysis to determine what actions need to be taken to align the current infrastructure with the desired configuration. This includes creating, modifying, or deleting resources as required. By presenting a detailed preview of all proposed changes, users can review the upcoming alterations before they are applied, ensuring better control and understanding of the infrastructure adjustments.

In contrast to other options, the terraform plan command does not apply changes to the infrastructure, validate configuration files, or exclusively focus on resources to be destroyed. Its primary function is to provide a clear and comprehensive overview of the modifications that will occur if the subsequent apply command is executed. This empowers users to make informed decisions about their infrastructure management.