The European Commission, the EU executive's arm, is probing clauses Amazon has with publishers which may shield the company from competitors, including an obligation to be informed of more favourable terms being offered by rivals.
Competition Commissioner Margrethe Vestager said in a statement that the inquiry did not call into question Amazon's "successful business" offering customers goods such as e-books.
"However, it is my duty to make sure that Amazon's arrangements with publishers are not harmful to consumers by preventing other e-book distributors from innovating and competing effectively with Amazon," Vestager said in a statement.
Brussels is already conducting a separate investigation into Amazon's tax arrangements over its tax deals in Luxembourg, one of a series of such probes targeting major global firms.
Amazon said its e-book business did not breach EU rules.
"Amazon is confident that our agreements with publishers are legal and in the best interests of readers. We look forward to demonstrating this to the Commission as we cooperate fully during this process," it said in a statement to AFP.
A European Commission spokesman said the new probe was "not related to the previous investigation of Amazon".
Former Danish minister Vestager has taken a hardline approach to the job that she started in November, opening a series of anti-trust initiatives in recent weeks.
US-based tech firms have been a particular target for Vestager amid concerns that companies across the Atlantic are distorting the 28-nation bloc's cherished single market.
The investigations, which include a landmark case against Google, have however raised deep suspicions in Washington over EU trade regulation.
Brussels is also currently carrying out high-profile probes into tax agreements involving tech giant Apple in Ireland, coffee chain Starbucks in the Netherlands, and Italian automaker Fiat in Luxembourg, in addition to the Amazon tax probe.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
