Which application or service?: TestRail On Prem

What type of connector? (SaaS, Database, File or Event Source):

SaaS

Additional details:

• Since Fivetran's standard TestRail connector only supports cloud instances due to its fixed URL template, the customer requested a separate, custom-built connector specifically for their on-premises TestRail instance.
• the customer asked if a separate connector could be built specifically for their on-premises instance to run in parallel to their existing cloud connector