Hello @John van Zalk,
welcome to this moderated Azure community forum.
Are you using Application Insights in combination with your Azure Functions?
If your functions work with HTTP triggers, you are in luck. Application Insights offers a number of availability tests.
This goes from the original URL pings to more elaborate 'standard tests':
This single request test is similar to the URL ping test. It includes TLS/SSL certificate validity, proactive lifetime check, HTTP request verb (for example,
POST), custom headers, and custom data associated with your HTTP request.
Application Insights works in combination with an Azure Log Analytics Workspace (Azure monitor).
This service also offers Alert rules.
This way, you can add even more elaborate tests.
Please check out these different ways to monitor the health of your Azure Functions.
This answer is written by myself, not by some AI. If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.