For example, suppose you have a small group of in-house users who are dedicated and will be committed to following the UAT process rigorously. In that case, exploratory testing will not be a major factor or relevant to your test. However, suppose the application is to be rolled out on a mass scale publicly and contains sensitive or valuable information. In that case, internal exploratory testing may be critical for ensuring your testing process is functional.
Exploratory testing may have been included in earlier quality assurance phases if the software is being developed internally. Still, it is also good practice for the end-user to test the software too before distribution.