Load balancing and Cloud security isn't considerable research topic on cloud. Cloud is secure and people have started using cloud. Companies might not have started using if it is not secure. The same applicable for load balancing too. Cloud service providers such Amazon/GCP, etc have well defined load balancing mechanism. Auto scaling features makes the process much easier.
So, I wish research scholar should start concentrate on other topics in cloud such as orchestration and AI. Looking forward to collaborate with research scholars on the same..publish papers.