Can anyone explain how the code developed will be maintained in Realtime projects

hi guys,

can anyone explain how the code developed will be maintained in Real time projects.

1.what type of tools they use to maintain the code.
2.Any other applications are used to help in executing multiple robots simultaneously
3. how results are maintained

Please provide some insight about UiPath real projects. If somebody could share an overview of the project and how RE Framwork is used in real projects.

Thanks.