Layer height refers to the height of each individual layer that is being printed and applies to all 3D printing processes It plays a role in determining the level of resolution of your part. Standard layer heights depend on technology:
MJF, SLS, FDM - 100microns
SLA - 50 microns
You can adjust your required layer height while building your quote . A finer layer height will result in a part with higher detail resolution. A greater layer height will allow for faster and more cost-effective printing.
You can read more about the effect of layer height here .