Small Cells sites are at the cutting edge of 5G.  It is estimated that nearly half a million are currently needed across the United States.  They are especially proficient at filling small dead zones in urban outdoor areas.

They can be disguised and integrated into light poles, flag poles and may other shapes so they are architecturally consistent. These are generally not regulated by local government with exception of a permit fee.

These can carry a monthly rental fee payable to the landowner under the right circumstances. These are commonly deployed in conjunction with distributed antenna systems in large spread-out campus environments.

Rooftop antennas are essentially cell towers without the tower.  They are placed on rooftops of existing, habitable buildings in strategic areas and can be painted to suit. These do not provide coverage to the building on which it is placed but on the approaches to it.  There is a monthly rental fee paid to the building owner for the use of this space.

Macro sites are heavily regulated by local authorities and require a thorough knowledge of not only engineering but also local code.  They are placed in carefully selected areas and come in a manner of styles.  There is a monthly rental fee paid the building owner for the use of this space.