It's like, the complexity has to live somewhere. I've seen successful serverless designs but the complexity gets pushed out of code and into service configurat

It's like, the complexity has to live somewhere. I've seen successful serverless designs but the complexity gets pushed out of code and into service configuration / integration (it becomes arch spaghetti). These systems are difficult to properly test until deployed to cloud. Also, yeah, total vendor lock in. It works for some teams but is not my preference.