We use a couple third-party sites for business, such as Netsuite and Salesforce. 

They have external status websites for status. 
For example https://status.netsuite.com/, has Application UI, SuiteCommerce - Websites, SuiteCommerce - Checkout, Email, etc.
Is there a way Site 24x7 could monitor each of these components?
I came across content changing but that seems a little unreliable