Beamlines ID27 is fully optimised for monochromatic high resolution XRD in order to address the most exciting and challenging questions related to science at very high pressures. This beamline can easily accommodate very complex sample environments such as the double-sided laser heating system, the Paris-Edinburgh press and the HP helium cryostat. These techniques are powerful tools to explore a very wide pressure (P>2 Mbar) and temperature domain (5