Kubernetes (K8s) objects are entities that can persist in a K8s cluster. You create cluster objects by describing their desired states in either a YAML or JSON file format for a cluster to run. We refer to the file as an object manifest or specification file. The object manifest may contain the object kind and the mandatory arguments the cluster required for the object creation. A good understanding of object specification files could help you make the right choices and to avoid simple mistakes so that you can spend less time on troubleshooting when you begin to deploy objects or pods on a cluster. It would be beneficial to arm yourself with a good understanding of what should go into object specification files as you venture into more application deployments on K8s clusters.