The investigation is the latest in a series of probes by EU regulators that target the business practices of U.S. technology giants. Antitrust regulators in Brussels have opened separate investigations in recent weeks into how electronic platforms like Amazon and Google Inc. operate in Europe, and whether electronic commerce firms are raising barriers to competition. Amazon is also one of four multinational companies, including Apple Inc., whose tax affairs are being probed by EU regulators.
Source: EU Competition Watchdog Investigates Amazon Over Electronic-Books Business – WSJ