At a very basic level, Pods live within Nodes and Nodes are a part of Clusters. Think of these Russian dolls, the big one houses the two smaller ones. Within a Cluster you can have many nodes, with EKS the suggested limit is 150 Nodes. The number of Pods found within a Node is dependent on the size of the underlying server. At the lowest end of the Node scale if you are using a t1.micro then you can have 4 Pods within that Node (3 system Pods and one worker Pod). At the other end of the spectrum, if you use a c5.18xlarge for your Node server, you can have 737 Pods within that one Node (3 system Pods and 734 worker Pods).