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Installation refers to the installation of an Agent on a machine with any supported platform that does not already contain an installed Agent.
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Upgrading refers to the increase of a currently installed Version, Release, or Modification level (see Versioning) of an Agent on a machine to a later Version, Release, or Modification level of that Agent (for example, upgrading Universal Agent 6.2.0.1 to Universal Agent 7.6.0.0).
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Applying maintenance refers to the increase of a currently installed Maintenance level (see Versioning) of an Agent on a machine to a later Maintenance level of that Agent (for example, applying maintenance to Universal Agent 7.6.0.0 to increase its maintenance level to 7.6.0.1).
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