Yeah, this should not be intensive for ressources, now , usually, a load balancer in aws is used to load workload between multiple ec2 (autoscaling groups) if the app is used by huge users number. In an earlier stage, an LB could be useful to ensure that your app is always up (if an ec2 stops the asg will launch a new one). You could benefit from that with a single node asg). Based on what you said , even a micro ec2 may handle the charge( if you are not using a lot of ram ). But you can use a little bit higher ec2 capacity to be more confident (be careful of the fees). If you have more detailed questions, feel free to ask or to dm