You have a Cloud Storage bucket that receives thousands of image files daily. You want to automatically transition these files to Nearline storage after 30 days, and then delete them after 365 days.

What is the most efficient way to implement this?

Cloud Storage Object Lifecycle Management allows you to define rules that automatically perform actions on objects in a bucket. You can set a rule to change the storage class to Nearline when the object's age is 30 days, and another rule to delete the object when its age is 365 days. This requires no custom code or compute resources.