Explanation
For long term success of their Send Log data extension, NTO should consider the following three aspects:
* Apply an appropriately-scoped Data Retention period. A Data Retention period is a setting that determines how long records are kept in a data extension before they are deleted or archived. Applying an appropriate Data Retention period can help NTO manage their storage space and performance by removing old or unnecessary data from their Send Log data extension.
* Add custom fields not included in the Send Log Template. The Send Log Template is a predefined data extension template that contains a set of standard fields for logging send data. However, NTO can add custom fields to their Send Log data extension to capture additional information that is relevant to their business needs or reporting requirements.
* Log attribute data necessary for auditing communications. Attribute data is any data that is associated with a subscriber or a message, such as name, address, email type, or campaign name. Logging attribute data can help NTO audit their communications and track their performance by various criteria. The other option is incorrect because:
* Log all variable data captured in emails at send time. Variable data is any data that can change or vary depending on different factors, such as personalization strings, dynamic content, or AMPscript variables. Logging all variable data can result in excessive storage consumption and performance degradation for NTO's Send Log data extension. NTO should only log the variable data that is essential for their reporting or analysis needs.