ELB Pre-warm feature

I could be wrong here, but I thought pre-warming ELB's is no longer required. Can you cite any AWS documentation?

https://aws.amazon.com/articles/best-practices-in-evaluating-elastic-load-balancing/?sc_channel=sm&sc_campaign=Support&sc_publisher=TWITTER&sc_country=global&sc_geo=GLOBAL&sc_outcome=AWS%20Support&sc_content=Support&trk=Support&linkId=193246211#pre-warming

What does it do in addition to allowing 10x or more traffic? Any impact on the back-end like ASG?

Can you help me understand your use case for ALB pre-warming? As an example, are you expecting a flash of traffic at a certain time (such as may be experienced when launching a brand new product at a marquee event that you believe will drive significantly more traffic than your site currently handles with very little ramp up). Elastic Load Balancing scales your load balancer as traffic changes over time. For the vast majority of workloads, the scaling offered by ALBs can handle increases in traffic.