While serverless offers many benefits, it also possesses some significant drawbacks. “Since there are no performance SLAs in serverless functions, they aren’t typically used for high-performance, stateful applications,” said Amir Jerbi, co-founder and CTO of serverless and container software provider Aqua Security. Also, breaking code into small pieces “creates an architectural and design overhead that requires both effort and knowledge that not all developers possess,” he added.