Status of the CUORE and prospects for CUPID*

The Cryogenic Underground Observatory for Rare Events (CUORE) is an array of 988 TeO$_{2}$ cryogenic bolometers designed to search for neutrinoless double-beta ($0\nu\beta\beta$) decay of $^{130}$Te and other rare decays. The detector began science data taking in Spring 2017. With an active mass of 742 kg operating at a temperature close to 10 mk, CUORE is unprecedented in size for this technology and its successful operation is a major milestone for the future of bolometers.  In this talk we will discuss the latest results and progress of the experiment.  The planned science program aims to accumulate five years of live-time at which point we expect to achieve a 90\% C.L lower limit sensitivity on the $^{130}$Te $0\nu\beta\beta$ decay half life of $9.0\times 10^{25}$~yr. With this sensitivity CUORE will begin to probe the inverted hierarchy of neutrino masses for certain nuclear matrix elements.  Beyond CUORE, we will discuss the CUPID initiative (CUORE Upgrade with Particle IDentification) which aims to realize a next-generation experiment exploiting improved bolometers in order to fully probe the inverted hierarchy. In particular we will discuss valuable insights gained from CUORE data and R\&D prototypes towards achieving this goal.