| UpgradeDetail | Detail entry for an upgrade action. |
| IConfigurationUpgradeAction | A routine performed against an IConfiguration. |
| IConfigurationUpgradeActionResult | The result of a single more upgrade action. |
| IConfigurationUpgrader | Module Specific Configuration Upgrader. |
| IConfigurationUpgradeResults | The result of a set of one or more upgrade actions for a single IModule. |
| UpgradeState | Result states for an IConfigurationUpgradeAction. Note: The numeric ordering denotes the severity level, where anything larger than 'Succeeded' is a failure of some sort. |