* It's a specific service for a particular organization or institution: It could be an online platform or system used by Abbey Road Studios, a specific bank, or a university named Abbey.
* It's a misspelling: The actual name of the service could be something slightly different, like "Abbey Road Online" or "Abbey Bank Online."
* It's a newly launched service: It could be a new platform that has not yet gained widespread recognition.
To find out what "Abbey Online" is, you need more context. Please provide:
* The context in which you encountered this term. Where did you see or hear it?
* Any other information you have about it. Do you remember any details about the service?
With more information, I can help you find the right answer.