Cloud the bottom of the hierarchy. Clouds in the troposphere assume five physical forms based on structure and process of formation. These forms are commonly used for the purpose of satellite analysis. They are given below in approximate ascending order of instability or convective activity. "Non-convective" stratiform clouds appear in "stable" airmass conditions and, in general, have flat sheet-like structures that can form at any altitude in the troposphere. The stratiform group is divided by altitude range into the genera cirrostratus (high-level), altostratus (mid-level), stratus (low-level), and nimbostratus (multi-level). Fog is commonly considered a surface-based cloud layer. The fog may form
Cloud printing options do simplify the printing process, all the print data must travel through the public cloud as it makes its journey from device to printer. It also means no printing is possible when the cloud is too slow or when there is a connection outage. Since some clouds charge on inbound and/or outbound traffic, heavy print jobs can have a significant cost. True cloud print solutions do not require any on-premise server in the company complementing the cloud, whether that is a print server or an application server, or a "gateway" service. Today many solution providers just interface an on-premise