Google CEO Sundar Pichai will testify on Monday in a once-in-a-generation antitrust fight over Google's dominance of search and some parts of search advertising.

Highlights

• The government has argued that Google illegally paid an estimated $10 billion annually to smartphone makers and wireless carriers to be the default search provider on their devices.
• Google has argued that the revenue share agreements are legal and that it has invested to keep its search and advertising businesses competitive.
• The case has far-reaching implications for the tech industry and for consumers.

The government is alleging that Google has abused its market dominance in search to maintain its position in the benefiting online advertising market. The market share of the US search market, Google is about 90% which is comparatively much larger than other search engines.

Google has argued that its agreements with smartphone makers and wireless carriers are legal and that they benefit consumers by giving them a choice of search providers. The company has also added that it invests predominantly in research and development to make competitive its search and advertising business.

The case is expected to last several weeks and could have far-reaching implications for the tech industry and for consumers. If the government is successful, it could lead to a breakup of Google or to other changes in the way the company operates.