Explanation
Create a special user solely for the integration purposes. This is the first thing that the Architect should do when building a solution that allows a service to access Salesforce through the API. Creating a special user for the integration purposes can help to ensure security, accountability, and traceability of the API calls. The special user should have a unique username, password, security token, and profile that grants only the necessary permissions and access for the integration. The special user should also be assigned to an API-only user license type that prevents logging in to the Salesforce UI. References: Certification - Integration Architect
- Trailhead, [User Licenses], [API User Permission]