 Welcome to day four of the DHIS2 Digital Annual Conference. Today, our event begins with expert lounge sessions hosted on gather, looking at the Android SDK, event reports, program indicators, and interoperability. Then, we'll kick off our presentation sessions with a plenary on design for data use, where we'll discuss key concepts of designing systems to facilitate the use of data and we'll have examples from Uganda on how this can be put into practice. After that, we have a number of parallel sessions that explore the theme of data use and design, such as at the local level to support planning, data use in e-registries, DHIS2 research, and the DHIS2 design lab. We've also got sessions on key topics, looking at malaria and data quality. And you can also join our technical parallel sessions on scalability and performance tuning, security, and metadata management. Finally, the use case bizarre is back, where we've got short presentations on a variety of community projects and innovations. Remember, you can find all the info on the sessions on our sketch page and read about the presentations on the community of practice. We look forward to seeing you at day four of the conference.