: Platforms like Salesforce or HubSpot attach these to links in emails to see who clicked and from which campaign.

: If you are a developer, these parameters might be used to filter results from an Amazon S3 bucket or a similar storage service using S3 Select .

this string (e.g., in a URL, a log file, or code) If you are trying to implement tracking or debug a link The website it came from (if it's a specific service) Query Parameters - Branch.io