Abstract: ROOT is a software package developed by an international team with a strong presence at CERN (Switzerland). With presently more than 2 EB of data coming from the CERN LHC experiments written in the ROOT TTree data format, this project is a veritable international community effort with a stable support model for users in HENP and other sciences. In this seminar we will take a look at the modern ROOT features resulting from a continuous evolution following experiments and users' needs, including modern and performant data analysis and statistical inference. Furthermore, we will explore the future of the project, highlighting among other topics the imminent introduction of an impactful contribution in the form of a new data format for HL-LHC and future colliders, called RNTuple.