maxInstances

Maximum number of instances to run for this version. Set to zero to disable maxInstances configuration. Note: Starting from March 2025, App Engine sets the maxInstances default for standard environment deployments to 20. This change doesn't impact existing apps. To override the default, specify a new value between 0 and 2147483647, and deploy a new version or redeploy over an existing version. To disable the maxInstances default configuration setting, specify the maximum permitted value 2147483647.