European and US regulators are increasing pressure on Amazon, Apple, Google, Meta and Microsoft as concerns grow over their market power in app stores, cloud computing and digital advertising. The renewed scrutiny signals a broader push to test whether the five companies have used their scale to limit competition.

According to Reuters, authorities on both sides of the Atlantic are examining whether the firms’ control over key digital markets has made it harder for rivals to compete on price, access and reach. App-store fees and rules remain a major flashpoint, while cloud services and online ad dominance are also drawing attention.

The latest wave of investigations reflects a more aggressive regulatory mood toward Big Tech after years of criticism that existing competition laws have failed to keep pace with the industry’s expansion. Officials are seeking remedies that could range from changes to business practices to formal penalties, depending on the findings.

For consumers and smaller businesses, the outcome could shape how much they pay to distribute apps, buy cloud services and reach audiences online. The cases also underscore a larger global effort to curb concentrated digital power and restore room for competition in markets that increasingly shape daily life.