Brazil's Competition Authority, known as CADE, has initiated an official investigation into Microsoft. This development reflects growing scrutiny of major technology companies and their market practices across different jurisdictions. The antitrust probe underscores how regulators worldwide are increasingly examining the dominance and competitive conduct of tech giants. Such enforcement actions demonstrate the expanding regulatory landscape that impacts not just traditional tech, but also shapes policy discussions surrounding digital markets, platform governance, and fair competition principles. The case highlights broader trends in how national authorities are asserting oversight over large corporations' business operations.