I/O Extended, also known as IOx, was an annual developer conference organized by Google. The event was an extension of the Google I/O conference and focused on providing additional content and opportunities for developers to explore and engage with Google's latest technologies and platforms.

During IO Extended, developers had the chance to participate in live streaming sessions of the main Google I/O conference, which typically took place at the Google headquarters in Mountain View, California. These sessions covered a wide range of topics, including new product announcements, platform updates, and technical discussions.

IO Extended events were held in various locations worldwide, including Google offices, university campuses, and other designated venues. The goal was to bring the experience of the main conference to developers who couldn't attend the event in person.

The events featured keynote presentations, technical sessions, code labs, codelabs, hackathons, and networking opportunities. Attendees had the opportunity to interact with local developer communities, connect with Google experts, and gain insights into Google's latest tools, APIs, and frameworks.

IO Extended events often included live demonstrations and hands-on workshops, allowing developers to dive deeper into specific technologies and learn how to integrate them into their projects. The sessions covered a wide range of topics, including Android app development, web technologies, machine learning, cloud computing, Internet of Things (IoT), and more.

By attending IO Extended, developers could stay up to date with the latest trends in software development, learn best practices, and gain valuable insights from industry leaders. The events also provided a platform for developers to showcase their work, collaborate with peers, and receive feedback from Google experts.

However, please note that as of my knowledge cutoff in September 2021, there hasn't been any specific information about IO Extended events beyond that point. It's possible that Google may have made changes to the event format or discontinued it altogether since then.