Add overview page & video

apps/docs/pages/core-concepts/_meta.ts

@@ -1,4 +1,5 @@
 export default {
+  overview: "Overview",
   systems: "Systems",
   targets: "Targets",
   environments: "Environments",

apps/docs/pages/core-concepts/overview.mdx

@@ -0,0 +1,30 @@
+# Overview
+
+Ctrlplane is a centralized, scalable deployment management system designed to
+simplify and automate software deployments. At the core of Ctrlplane are several
+key components that work together to ensure smooth operations.
+
+import Youtube from "react-youtube";
+
+<div className="flex justify-center pt-4">
+  <Youtube videoId="72_6ZtDzmZo" />
+</div>
+
+**Targets** are entities such as Kubernetes clusters, virtual machines, or other
+logical resources, that the system interacts with. These targets can be added
+manually or through **Target Providers**, which automate the process by
+continuously monitoring infrastructure, updating target statuses, and providing
+real-time visibility. Targets are organized into **Environments**, which
+dynamically update based on target filters, ensuring the right infrastructure is
+always in place for deployments.
+
+Once targets and environments are established, **Deployments** come into play. A
+deployment is the process of releasing a specific version of a system into an
+environment. Each deployment is governed by **Environment Policies**, which
+manage how software transitions between environments. When a release is created,
+it generates a **Job**, which is executed by **Job Agents** that handle tasks
+like running CI/CD pipelines. In addition, Ctrlplane supports **Runbooks**,
+predefined jobs that automate routine tasks like troubleshooting or maintenance,
+providing further automation and reliability. Together, these components form an
+integrated system for managing software releases and operational tasks in a
+streamlined, efficient way.