What Are the Differences Between Creating an Execution Plan, Creating a Stack, and Updating a Stack?

Creating an execution plan: Generate an execution plan. You can browse the entire plan in advance to evaluate the impact on ongoing resources. Creating an execution plan will not change the stack. The system changes the stack only when the execution plan is executed.

Creating a stack: Provide an initial template to create and deploy a stack.

Updating a stack: Provide a new template or new parameters to trigger a new deployment for directly modifying the stack.