🎯 Low-Cost Objective

1 single instance (Vultr “Regular” 1 vCPU / 1–2 GB RAM).
1 single MySQL/MariaDB on the same instance (avoid managed DB).
1 schema (one database) with multi-tenant via tenant_id column (not separate tables).
Single deployment serving all domains.

Uploads & Static Files

Shared folder with subfolders per tenant:
```
storage/uploads/{TENANT_ID}/...
```
Database stores only the relative path:
```
uploads/{TENANT_ID}/file.jpg
```
Nginx:
```
client_max_body_size 50M;
```

Sessions & Cache

Cookies are already isolated per domain.
If using Redis or file cache: prefix keys with:
```
tenant:{TENANT_ID}:
```

Minimal Nginx (One Server Block)

server {
  listen 80;
  server_name example1.com www.example1.com example2.com www.example2.com;
  root /var/www/app/public;
  index index.php;

  location / {
    try_files $uri /index.php?$query_string;
  }

  location ~ \\.php$ {
    include snippets/fastcgi-php.conf;
    fastcgi_pass unix:/run/php/php8.2-fpm.sock;
  }

  client_max_body_size 50M;
}

🔐 SSL Options:

For zero-pain multi-domain SSL → use Caddy (free auto-SSL).
If staying with Nginx → run certbot for each domain.