The Applied Probability Society of INFORMS announced that Sem Borst is the 2020 Markov Lecturer. In 2005, the Applied Probability Society initiated the annual Markov Lecture, to be delivered in the fall of each year at the INFORMS Annual Meeting. The intent is to both honour the associated speaker and to bring to the APS membership topical work of the highest calibre in our discipline. The Markov Lecturer is selected by the APS prize committee. Sem also gave the lecture in the framework of the SNAPP seminar series, which can be viewed via the links here.