A developer uses an API to send data to a Marketing Cloud data extension once every five minutes using the REST API. They notice data does not always write to the data extension, leading to data loss.
Which three best practices are recommended to avoid this issue? Choose 3 answers

What is the operational order of the Contact Delete process for Marketing Cloud?

A developer needs to write AMPscript to ensure the expiration date on a coupon is the last day of the month. What would produce the desired result?

Which statements are true regarding the Marketing Cloud SOAP API? Choose 2.

A developer created a landing page in CloudPages which return unique content when subscriber data is located on a related data extension. The developer does not know if all subscibers have rows in the related data extension, and want default content to render if no subscriber data is found on the related data extension. Which best pratice should the developer follow to control the unique and default content?