Survival Analysis is one of the key research areas of SiDOR research group. Along the years SiDOR has introduced many statistical methods to deal with survival data. Topics include: non-standard censoring and truncation models, length-biased data, multi-state models, goodness-of-fit tests, resampling procedures, semiparametric methods, smoothing techniques and many others. WSA2023 workshop (November 30 and December 1, Graduates Hall, Faculty of Economics, Vigo) celebrates all these contributions, on the occasion of the 25h anniversary of the group. Recent advances in the field will be presented by a number of leading researchers from several universities, within an international programme that will mix keynote talks and contributed presentations. Co-organized by the Department of Statistics and Operations Research, WSA2023 is supported by Grant PID2020-118101GB-I00, Ministerio de Ciencia e Innovación (MCIN/ AEI /10.13039/501100011033); and Consellería de Cultura, Educación e Universidade, Xunta de Galicia, expediente ED431C 2020/03.