Curbing Google is an overdue return to the government’s longtime role in encouraging competition among tech companies.

In a landmark antitrust case, Judge Amit P. Mehta ruled on Tuesday that Google must hand over some of its search data to rivals but did not grant the government’s biggest requests.

Curbing Google is an overdue return to the government’s longtime role in encouraging competition among tech companies.

The judge’s decision positions Google to keep its search business running largely without interruption.

A federal judge ordered steps in the search monopoly case that will restrain Google but not break it up, signaling a cautious antitrust approach by courts.