BAO with DESI

I present the measurement of BAO with spectroscopic surveys, and the upcoming DESI experiment. I then present the current status on constraints on H0 from BAO data, where the sound horizon can be derived either from CMB data or, independently, from BBN theory and Deuterium measurements. The most recent results are those soon to be published from the eBOSS project. I conclude by showing the improvements on the measurement of H0 that one can expect with DESI.