Alphabet’s Google will invest $6.78 billion in the U.K. over the next two years, the latest big-ticket commitment from an American tech giant seeking to expand artificial-intelligence infrastructure and other services in Europe.

On Monday, Google’s parent company, Alphabet, became the fourth company to reach a market value of $3 trillion, and every member of this exclusive club has something in common.

The AI-scraped summaries that pop up when using Google’s search function are stealing traffic and hurting its business, Penske Media Corp. has charged in a potentially landmark lawsuit. Penske, the publisher behind more than 20 online brands such as Rolling Stone,