# Cloud DNS

**Cloud DNS** on the IONOS Cloud platform is the high-performance, authoritative DNS service that ensures your applications and services are accessible on the internet globally. It allows you to seamlessly configure DNS zones and resource records to translate human-readable domain names into IP addresses and vice-versa.

Begin with the [<mark style="color:blue;">Cloud DNS User Guide</mark>](https://docs.ionos.com/cloud/network-services/cloud-dns) that will walk you through mastering DNS configurations, including how to create and manage:

* **Secondary DNS zones**
* **Reverse DNS zones**
* **External DNS records**
* **Necessary certificates**

With your understanding of the core concepts and configuration complete, use the following tutorials for detailed, step-by-step instructions on implementing advanced workflows:

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><mark style="color:blue;"><strong>ExternalDNS for Managed Kubernetes</strong></mark></td><td>Use ExternalDNS with Managed Kubernetes to manage DNS records.</td><td><a href="cloud-dns/externaldns">externaldns</a></td></tr><tr><td><mark style="color:blue;"><strong>Set Up a Secondary Zone</strong></mark></td><td>Set up a secondary DNS zone with your provider by running a BIND9 server on Ubuntu.</td><td><a href="cloud-dns/set-up-secondary-zone">set-up-secondary-zone</a></td></tr><tr><td><mark style="color:blue;"><strong>Enhance Email Deliverability with a Reverse DNS, SPF, and DKIM Record</strong></mark></td><td>Configure a reverse DNS, SPF, and DKIM record to enhance email deliverability.</td><td><a href="cloud-dns/reversedns">reversedns</a></td></tr><tr><td><mark style="color:blue;"><strong>Issue TLS Certificates using IONOS Cloud Certbot Plugin</strong></mark></td><td>Issue TLS certificates for hosted content and applications using the IONOS Cloud Certbot plugin.</td><td><a href="cloud-dns/certbot">certbot</a></td></tr><tr><td><mark style="color:blue;"><strong>Set Up a TLS Certificate using</strong><strong> </strong><strong><code>acme.sh</code></strong><strong> </strong><strong>and IONOS Cloud DNS</strong></mark></td><td>Use <code>acme.sh</code> and IONOS Cloud DNS to secure your web server with a valid ZeroSSL TLS certificate</td><td><a href="cloud-dns/acme">acme</a></td></tr><tr><td><mark style="color:blue;"><strong>Manage TLS Certificates Using IONOS Cloud DNS Webhook for</strong><strong> </strong><strong><code>cert-manager</code></strong></mark></td><td>Secure and manage Kubernetes TLS certificates using the IONOS Cloud DNS Webhook for <code>cert-manager</code>.</td><td><a href="cloud-dns/certmanager-widget">certmanager-widget</a></td></tr></tbody></table>