Cloud Storage has four storage classes: Standard, Nearline, Coldline and Archive. Each of those storage classes provide 3 location types:

• A multi-region is a large geographic area, such as the United States, that
  contains two or more geographic places.
• A dual-region is a specific pair of regions, such as Finland and the
  Netherlands.
• A region is a specific geographic place, such as London.

Characteristics applicable to all storage classes: