How should an architect ensure authorized data access for each business partner in integrations?

When designing integrations that involve multiple business partners, it's essential to ensure that each partner has authorized access to the data they require, while also maintaining security and proper governance. Providing each partner their own username and password with a specific role/profile is the best approach for several reasons.

First and foremost, individualized usernames and passwords allow for a more granular control of access. Each business partner can be assigned a specific role or permission set that dictates what data they can access and what actions they can perform. This minimizes the risk of unauthorized access to sensitive data, as it prevents any two partners from having overlapping access unless specifically granted.

Additionally, having distinct credentials for each partner enhances accountability and traceability. In the event of a security breach or data misuse, it would be easier to identify which partner's access led to the issue, allowing for targeted audits and investigations.

Moreover, this approach aligns with best practices for security as it avoids the pitfalls of shared credentials, which can lead to complications such as difficulty in tracking who accessed the system, potential for password sharing, and challenges in revoking access when a partner relationship ends.

In contrast, shared integration usernames or profiles (such as those indicated in the other options) can create significant security vulnerabilities. They do not provide the same