Why won’t my Lambda function execute?

I just came across a goofy problem. I created a lambda function and it appeared to me as if nothing was happening. Like it wasn’t being triggered.

I couldn’t find any errors in CloudWatch. Nada.

Then I thought — I wonder if it is failing but not able to tell me so because the Lambda needs access to CloudWatch Logs. And indeed.

Remember to Add CloudWatch Logs permissions.

p.s. Back to my lambda to fix some json property mishap!

keywords: sns call lambda cross-region but lambda not being triggered