App Engine app.yaml reference | Google App Engine standard environment docs | Google Cloud

Stay organized with collections Save and categorize content based on your preferences. Region ID The REGION_ID is an abbreviated code that Google assigns based on the region you select when you create your app. The code does not correspond to a country or province, even though some region IDs may appear similar to commonly used country and province codes. For apps created after February 2020, REGI

[otiai10]

“Required if creating a service. Optional for the default service.”