### CronJobs: CronJobs are a Kubernetes resource that allow you to schedule a job to run at a particular time or interval. CronJobs are useful for running periodic tasks, such as backups or data migrations, or for running one-time batch jobs. CronJobs use the standard cron syntax to define the schedule for the job, and can be configured to run on a specific node or set of nodes in your cluster. These are just a few of the most important resources in the Kubernetes API that you'll need to interact with to create distributed applications. There are many more resources available in the API that can help you build more complex and scalable applications. Each of these resources provides unique capabilities that can help you build more complex and scalable applications on Kubernetes. However, they also add complexity to your application architecture, so it's important to carefully consider whether and how to use them based on your application's specific needs.