Environmental Barrier Coatings (EBC) are critical to protect Ceramic Matrix Composites (CMC) from water vapour corrosion in a gas turbine environment. In this work, the state of art EBC material Yb2Si2O7 which is usually applied on SiC-based CMCs is taken as an example. The major challenge is to obtain dense and crystalline Yb2Si2O7 coatings. The Yb2Si2O7 coatings were deposited with different coating technologies: Very Low-pressure Plasma Spraying (VLPPS), Suspension Plasma Spraying (SPS), Atmospheric Plasma Spraying (APS), High-Velocity Oxygen Fuel spraying (HVOF) and Aerosol Deposition (AD). The microstructure features of coatings deposited with different coating technologies mainly with respect to crystallinity and porosity will be discussed. By using a high deposition temperature, dense and fully crystalline Yb2Si2O7 coatings can be obtained with VLPPS and SPS. However, vertical penetrating cracks and a large amount of amorphous phase can only be avoided in APS coatings by using specific spray conditions. A highly crystalline dense coating can be obtained with HVOF, but the high kinetic energy of particles can introduce a high-stress level leading to a high risk of delamination of the coatings and also some remaining porosity is present. As AD is a room temperature coating technology, melting of feedstock can be fully avoided. A crack-free, fully crystalline Yb2Si2O7 coating can be obtained. Also here the high porosity level is certainly an issue.