  NEXT (Neutrino Experiment with a Xenon TPC) is a neutrinoless double beta
decay experiment located at the Laboratorio Subterr\'aneo de Canfranc (LSC,
Spain). Its aim is to demonstrate that the neutrino is a Majorana particle by
detecting the neutrinoless double beta decay process in xenon gas enriched in
the $^{136}$Xe isotope. The detector technology used in NEXT is that of
radiopure high pressure time projection chambers with electroluminescence
amplification, which provide excellent energy resolution better than 1$\%$ FWHM
in the energy region of interest, topological reconstruction that allows
rejecting single-electron background events and a strong potential for "in
situ" tagging of the barium daughter ion. The experiment has been developing in
phases.
  The NEXT-White detector has recently finished operation at the LSC and
contained approximately an active Xe mass of 5 kg. Its purpose was to
demonstrate the excellent energy resolution, to validate the reconstruction
algorithms and the background model, and to make a measurement of the
two-neutrino double beta decay of $^{136}$Xe.
  The 100 kg NEXT-100 detector is under construction and is scheduled to be
installed and assembled by the first half of 2022. The predicted 90$\%$ CL
sensitivity to the neutrinoless double beta decay half-life will reach
$10^{26}$ years for an exposure of about 400 kg $\cdot$ year.
  A vigorous program towards the development of ton-scale detectors is also
under way, including extensive R$\&$D towards the realization of in-situ
Ba$^{2+}$ tagging as means to achieve virtually zero-background detection. A
first module with a mass of at least 500 kg may be operating as early as 2026
at the LSC.
  In this manuscript, recent results obtained with the NEXT-White detector will
be presented, as well as the NEXT-100 construction status and on the prospects
of future NEXT detectors.
