# Requirements

#### 🔧 System Requirements

To get started, you’ll need the following:

* **A working installation of Concord CRM** (version **1.5.\***)
* **PHP 8.2 or higher**
* **MySQL 5.6 or higher**

That’s all you need for the core setup.

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#### 🌐 Additional Requirements (For Domain Features)

If you plan to use subdomains, custom domains, or the single-database setup, the following additional requirements apply:<br>

* **MySQL user with privileges to create and delete databases**\
  Required for automated provisioning when using the **single-database** setup option.
* **Wildcard SSL certificate**\
  Necessary to support secure connections for the **subdomain** feature. If not available, you will need to handle SSL configuration manually.
* **On-demand TLS** (e.g., Caddy - Optional, only for Custom Domain support)\
  Recommended for **custom domain** support. Without it, you’ll need to manually configure SSL for each custom domain.