We have the best espresso machines for home use and for commercial use.
"Home use" pertains to relatively small volumes - what a family is likely to use. These machines are NOT certified for commercial use. If you are selling espresso-based drinks, or make large volumes throughout the day (as in many offices), you will need commercial equipment. Commercial equipment is more rugged, and will be NSF, ETL, or UL certified. You should ask the local inspector what is required before purchasing for business use.