NetSuite does support OAuth authentication, but there is limited official documentation from NetSuite specifically about it. While not widely publicized, several NetSuite partners and developers have successfully implemented OAuth 2.0 authentication flows using NetSuite’s REST Web Services API and SuiteCloud Platform.
However, I could not find any official documentation from NetSuite explicitly stating that OAuth is not supported. If you need more specific guidance or confirmation, it’s recommended to reach out to NetSuite’s support or developer relations team directly. For more information, visit a NetSuite Solution Provider.
