This will be part of the Episerver nuget package https://nuget.episerver.com/package/?id=EPiServer.MarketingAutomationIntegration.Eloqua
Make sure you have the package restored from the Episerver nuget feed to your packages folder else any referenced libraries will have an error in the VS references window and any code referencing it will error.
If you're unfamiliar with the episerver nuget feed, read about it here https://world.episerver.com/documentation/installing-optimizely/installing-optimizely-updates/
I'm new to EpiServer and started working on some semi-old code which seems to make use of a EpiServer.MarketingAutomation.EloquaService namespace, which for some reason can't be found. I'm having a hard time finding any documentation or anything regarding the MarketingAutomation namespace, so I was wondering if somebody might be able to help me with this question.
It basically looks like the "MarketingAutomation" namespace is completely missing from the EpiServer namespace and I'm not sure how to go about this since I'm very new to EpiServer. The only ideas I had was that my project might be missing some imports or something similar or maybe might be using a newer version of Epi, where this namespace has been moved or changed, but since I can't find any information about this namespace at all I was hoping that somebody here might know something about this ?