Final answer:
An NDA within a contract with a cloud service provider primarily ensures the provider will not disclose or misuse sensitive customer data, creating a confidential relationship to uphold data privacy and security.
Step-by-step explanation:
The primary purpose of including a Non-Disclosure Agreement (NDA) in the contract with a cloud service provider is to ensure that the cloud service provider does not disclose or misuse sensitive customer data. An NDA is a legal contract that creates a confidential relationship between the parties to protect any type of confidential and proprietary information or trade secrets. Therefore, in the context of a technology company hosting sensitive customer data with a cloud service provider, the NDA serves as an essential document that legally binds the provider to keep the data secure and private.