What is the cluster size? How many nodes, approximately how many services?

The size of the cluster depends on specific requirements and load. Typically, for medium-sized projects, a cluster may consist of 3-10 nodes to ensure fault tolerance and scalability. The number of services varies greatly — from a few dozen to hundreds of microservices, depending on the system's architecture and functionality. For example, a Kubernetes cluster with 5 nodes can run 50-100 services, including auxiliary ones (databases, cache, monitoring).