A US court has ruled that Google must open up the Google Play Store to third-party app stores, allowing them to access the full catalog of Google Play apps. The ruling also prohibits Google from requiring the use of Google Play Billing for apps distributed on the Google Play Store. This decision is seen as a significant shift in the Android app marketplace, potentially allowing for more competition and innovation. The ruling will take effect on November 1st, 2024, and will last for three years.