The placement of your decal will determine how I cut your vinyl. Inside cut, the vinyl will be placed on your glass from the inside where outside cuts, the vinyl will be placed directly to the outside of your window. Some people like it being protected from the weather (the vinyl I use will be fine in the weather and can last up to 4-6 years, inside just prolongs the life of the design). If you have tinted windows, inside cuts are not recommend as it could damage the tint or it will appear dull. Mostly, this comes down to personal preference, but no matter what direction you pick, the vinyl design will show correctly to the customers from the outside looking in. When in doubt, contact your building owner to see if they have any preferences or restrictions.