US carriers no longer support using application-to-person (A2P) SMS messaging over local, unregistered long codes. The Campaign Registry (https://www.campaignregistry.com/) was created to regulate robocalls, spam texts and opt-out options for customers. Under this new entity, all A2P 10DLC SMS and MMS message campaigns need to be verified prior to sending. This ensures that claims of what is being sent match messaging behavior and makes bulk messaging more secure.
A brand is the company or entity the end customer believes to be sending the message. This information tells mobile network operators who is sending messages.
A campaign represents a messaging use case, such as delivery notifications. Registering a campaign provides mobile network operators visibility into what kinds of messages are being sent over their networks. Depending on your requirement, you can register multiple campaigns.
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