The Bernoulli-IMS 10th World Congress in Probability and Statistics, jointly sponsored by the Bernoulli Society (BS) and the Institute of Mathematical Statistics (IMS), took place virtually at the Seoul National University, Korea from July 13 to 19, 2021. Scientific Program Committee chair Siva Athreya (Indian Statistical Institute) and Local Organizing Committee chair Hee-Seok Oh (Seoul National University) write:

The 10th World Congress was originally scheduled to be held in August 2020 but was postponed by a year due to the COVID-19 pandemic. In March 2021, it was then decided to host it virtually and https://wc2021.info/ was set up as the virtual host site for all talks (videos/slides) alongside https://www.wc2020.org/ the original site of the congress.

The program featured 15 main speakers. Nine of these were named lectures sponsored by the two societies. They were: Kolmogorov Lecture Persi Diaconis (Stanford University); Bernoulli Lecture Alison Etheridge (University of Oxford); Lévy Lecture Massimiliano Gubinelli (University of Bonn); Laplace Lecture Tony Cai (University of Pennsylvania); Tukey Lecture Sara van de Geer (ETH Zurich); Wald Lectures Martin Barlow (University of British Columbia); Blackwell Lecture Gabor Lugosi (ICREA & Pompeu Fabra University); Doob Lecture Nicolas Curien (Paris-Saclay University); Schramm Lecture Omer Angel (University of British Columbia). There were five IMS Medallion Lectures. These were given by: Gérard Ben Arous (New York University); Andrea Montanari (Stanford University); Elchanan Mossel (MIT); Laurent Saloff-Coste (Cornell University); Daniela Witten (University of Washington). There was one public lecture and it was delivered by Young-Han Kim (UCSD and Gauss Labs Inc). Susan Murphy (past President of IMS) gave the IMS presidential address. Claudia Klüppelberg (past President of BS) gave the closing remarks in the last session of the Congress.

There were 41 invited sessions, of which 36 were done by individual session organizers, two sessions organised by Korean Statistical Society, two sessions devoted to young researchers (the Bernoulli Society New Researcher Award Session and the IMS Lawrence D. Brown PhD Student Award Session), and the Bernoulli Paper Prize Session. In addition to these, there were 30 organized contributed sessions, 35 individual contributed talk sessions, and five poster sessions.
There were 755 registered participants from 41 countries. All invited session, contributed session and contributed talk speakers pre-recorded their talks and provided slides which were updated to the website. The videos of the live sessions, and of the 15 named and live lectures given by the speakers, were also uploaded to the website. The live sessions were well attended and there were over 11,000 views of the videos on the conference website (counting multiplicities), making it a very successful meeting. These, we hope, will be valuable resource as they will be hosted on the website for another year.