Our customization efforts involve the strategic use of AMPscript and SSJS to ensure that each unique key is entered or opted-in only once. Additionally, we have implemented measures to track new entries, associating them with their respective sources in the database under the label 'Source.' Any modifications to opt-in or opt-out preferences made through 'CloudPages' communications are seamlessly updated in the relevant tables using SSJS. This meticulous approach ensures the maintenance of accurate and up-to-date information in our client’s databases.

Upon submission, contacts are seamlessly integrated into Journey Builder multi-step touchpoint programs via APIs, streamlining the overall process and enhancing the efficiency of our client engagement strategies.