Azure Devops - call yaml script from another yaml in azure devops yaml

Hi I have the following files and hierarchy in Azure Devops repo and I wish to call yml files in an order File1.yml first and once complete Then call file2.yml . File1.yaml contains terraform code , File2 contains app code to be deployed on file1 resources. Can you please guide me or put me in a right direction . Thanks for your help in advance

Project

Folder1