The 25 largest issuers of Maestro brand cards based on purchase volume in 2018 are ranked on page 8. Maestro is a brand created more than 25 years ago by Mastercard issuers because they did not want to use Mastercard as their debit brand for cross-border payments. Over time, issuers in a few countries, such as Austria, made Maestro their national debit brand. However, Maestro has been losing favor among a growing number of issuers who are either promoting Mastercard as their debit brand or embracing newly created national debit brands such as Mir in Russia and Troy in Turkey. Worldwide, Mae...