Google I/O is an annual developer conference held by Google, typically in the spring or early summer. The event is a showcase for Google's latest products, platforms, and technologies, as well as an opportunity for developers to learn about new tools and techniques for building applications on Google's platforms.

Google I/O typically includes keynote presentations by Google executives, technical sessions covering a wide range of topics, product demonstrations, and hands-on code labs. The conference also offers opportunities for attendees to network with other developers, learn from experts in the field, and get feedback on their own projects.

In recent years, Google I/O has focused on a range of topics, including machine learning, artificial intelligence, virtual and augmented reality, Android development, web development, and more. The conference is typically attended by thousands of developers from around the world, and is widely regarded as one of the premier events in the tech industry.