Offering all add-ons for $349

Buy Now

Cumençà con Ultimate Multisite: la guida completa

admin

·

Ready to build your own Website as a Service (WaaS) platform? This comprehensive guide takes you from zero to a fully functional Ultimate Multisite installation—covering WordPress Multisite fundamentals, installation, configuration, and best practices.

What is Ultimate Multisite?

Ultimate Multisite is a WordPress plugin that transforms your WordPress Multisite installation into a premium network of sites—like WordPress.com, Wix, or Squarespace—but one that you own and control.

With Ultimate Multisite, you can offer customers the ability to create websites via monthly, quarterly, or yearly subscription fees. It handles everything: site provisioning, payment collection, checkout forms, discount vouchers, domain mapping, SSL certificates, and customer communications.

Before diving into Ultimate Multisite, you need to understand the foundation it’s built on: WordPress Multisite.

Understanding WordPress Multisite

WordPress Multisite is a built-in feature (since WordPress 3.0 in 2010) that allows multiple sites to share a single WordPress installation. When activated, your WordPress site becomes a “network” capable of hosting many subsites.

Think of it like this: A university maintains a single WordPress installation, but each faculty maintains their own WordPress site within that network.

What Gets Shared

All subsites in a WordPress Multisite network share:

  • WordPress core files — Updates happen once for all sites
  • Plugins and themes — Installed once, available network-wide
  • The database — One database with separate tables per subsite, like wp_[id]_posts, wp_[id]_comments, etc.
  • User accounts — Users belong to the network, not individual sites
  • wp-config.php — Single configuration file

What Stays Separate

  • Media uploads — Each subsite has its own uploads folder (wp-content/uploads/sites/[id])
  • Content — Posts, pages, comments, and settings are scoped per site
  • Active plugins/themes — Each site can activate different combinations (unless network-activated)
  • Admin panels — Each subsite has its own dashboard

This architecture is the main advantage of multisite: you can grow from 10 to 1,000 sites while keeping maintenance tasks the same.

Subdomain vs. Subdirectory: Choose Wisely

When setting up WordPress Multisite, you must choose between two URL structures. This decision is difficult to change later, so choose carefully.

Subdirectory Mode

URLs look like: yourdomain.com/site1, yourdomain.com/site2

Pros:

  • Easiest to set up and maintain
  • Single SSL certificate covers the entire network
  • No DNS wildcard configuration needed

Cons:

  • Search engines may treat all subsites as one giant site
  • URLs look less “professional” to some customers
  • Main site requires /blog/ prefix for posts (to avoid path conflicts)

Subdomain Mode

URLs look like: site1.yourdomain.com, site2.yourdomain.com

Pros:

  • URLs look more professional
  • Search engines treat each subsite as a separate website
  • No path conflicts between main site and subsites

Cons:

  • Requires wildcard DNS configuration
  • Needs wildcard SSL certificate (or individual certs per subdomain)
  • Slightly more complex initial setup

Our recommendation: For most WaaS platforms, subdomain mode is preferred because customers expect their sites to feel independent. The SSL complexity is largely solved by Ultimate Multisite’s hosting integrations and Cloudflare support.

Key Terminology

Before proceeding, let’s define the terms you’ll encounter throughout your Ultimate Multisite journey:

WordPress & Multisite Terms

  • Network — Your entire WordPress Multisite installation containing all subsites
  • Subsite — An individual site within your network (can be subdomain or subdirectory)
  • Super Admin — The highest permission level; can manage all subsites, plugins, and themes
  • Network Admin Panel — The dashboard where super admins manage the entire network
  • Domain Mapping — Allowing subsites to use custom domains (e.g., joesbikeshop.com instead of joes.yournetwork.com)

Ultimate Multisite Terms

  • Site Template — A pre-configured site that gets cloned when customers sign up (with theme, plugins, and content already set up)
  • Checkout Form — The registration form where customers select plans and create their sites
  • Product/Plan — A subscription tier you offer (e.g., Basic $9/mo, Pro $29/mo)
  • Membership — A customer’s active subscription to a product
  • Webhook — Automated notifications sent to external services when events occur (site created, payment received, etc.)
  • Events — Logged activities in your network (plan changes, payments, site creations)

Step 1: Install WordPress Multisite

Important: Many managed WordPress hosts (WP Engine, Cloudways, Closte, etc.) can set up Multisite for you automatically. Check with your host before doing this manually.

Prerequisites

  • A fresh WordPress installation (or an existing one you’re ready to convert)
  • FTP or file manager access
  • Ability to edit wp-config.php and .htaccess
  • Backup your site before proceeding
  • Deactivate all plugins temporarily

Enable Multisite

Open your wp-config.php file and add this line before the “That’s all, stop editing!” comment:

define('WP_ALLOW_MULTISITE', true);

Save and upload the file, then refresh your WordPress admin.

Configure the Network

Go to Tools → Network Setup in your WordPress admin.

  1. Choose Subdomains or Subdirectories
  2. Enter a Network Title
  3. Verify your Network Admin Email
  4. Click Install

WordPress will provide code snippets to add to your files.

Add the Configuration Code

Add this to wp-config.php (WordPress will show you the exact values for your site):

define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', true); // false for subdirectories
define('DOMAIN_CURRENT_SITE', 'yourdomain.com');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);

Replace the contents of your .htaccess file with the code WordPress provides (it will differ slightly for subdomain vs subdirectory).

For Subdomain Mode: Configure Wildcard DNS

If using subdomains, you need wildcard DNS so that *.yourdomain.com resolves to your server.

  1. Log into your hosting control panel (cPanel, Plesk, etc.)
  2. Find Domains or Subdomains
  3. Create a subdomain with an asterisk: *
  4. Point it to your main domain’s document root

Test Your Installation

Before installing Ultimate Multisite, verify your multisite works:

  1. Log in and go to My Sites → Network Admin → Sites
  2. Click Add New
  3. Create a test site
  4. Visit the test site to confirm it loads correctly

Step 2: Install Ultimate Multisite

With WordPress Multisite working, you’re ready to install Ultimate Multisite.

Installation

  1. Go to Network Admin → Plugins → Add New
  2. Cerca “Ultimate Multisite”
  3. Clica Installa, poeu Ativa in reet

El Wizard de configurazion

Dopo l’ativazion, te vegneret reindirizzà al Wizard de configurazion. Clica Comincia.

Pass 1: Control pre-installazion
El wizard verifica che ‘l tò server el rispeta i requisit (version PHP, MySQL, ecc.). Se tutt el va ben, clica Inanz.

Pass 2: Installazion
Clica Installa per creà i tabell del database e i file necessari.

Pass 3: Impostazion de bas
Configura i informazion de la tò azienda e la valuta predefinida. Questi informazion comparissen sui fattur e in di comunicazion coi client.

Pass 4: Contenud d’esempi (opzional)
Te podet installà template, prodott e moduj de checkout predefinid per aiutatt a partì. L’è racomandaa per i utent a la prima esperienza.

Clica Finiss — adess te gh’hee un’installazion Ultimate Multisite funzionanta!

Cas d’uso comun

Ultimate Multisite el supporta ona gran varietà de modej de business:

Model d’agenzia

Ospita e gestiss i sit web di client su ona piattaforma sola. Sfrutta licenz d’agenzia per temi e plugin su tücc i sit. Dòpera el mapping di domini inscì che ogni client el gabia el sò domini personalizzà col sò marchi.

Benefici: Agiornament centralizzad, sicurezza coerenta, gestion di client semplificada.

Costrutor de sit de niccia

Crea un costrutor de sit per un settor specific—ristorant, club de golf, agent immobiliari, ecc. Progetta sit template cont plugin e contenud specific del settor già configurad.

Benefici: I client ottennen un sit pront de dovrà in pochi minut. Ti te diventet l’espert de la tò niccia.

Fornidor de hosting WordPress

Offriss ona soluzion WordPress hospedada completa con fatturazion a abbonament, come WordPress.com o Squarespace. Gestiss tücc i aspet tecnich mentre i client se concentren sul contenud.

Benefici: Entrad ricorrent, control complet su la piattaforma, nissun fastidi de licenz per ogni sit.

Reet enterprise/educazion

Università, franchising o corporazion con tanti sit collegad. Ogni dipartiment/sed/franchise el ricef el sò sit mentre l’IT el mantegn el control central.

Benefici: Coerenza del marchi, sicurezza centralizzada, men carich per l’IT.

Miglior pratiche d’architetura

Considerazion sull’hosting

Evita l’hosting condivis a bon mercaa. I fornidor a bass cost massimizzen la densità del server, cioè la tò reet la compet con centenara de alter sit per i risors. Quest el porta a prestazion lent e client scontent.

Ultimate Multisite el funziona mej con fornidor de hosting che capissen Multisite e offren:

  • Integrazion automatica del mapping di domini
  • Certificad SSL wildcard o automatizzad
  • Risors adeguad per pussee sit
  • Bona infrastrutura de caching

Varda la nostra Guida ai fornidor de hosting per racomandazion dettagliad.

Otimizazion di prestazion

WordPress Multisite el pò scalà fin a migliaia de sit (WordPress.com l’è la prova), ma te gh’hee bisogn d’ona infrastrutura adequada:

  • Dòpera ona CDN — Cloudflare (el pian gratis el funziona benissim) el gestiss asset static e caching
  • Ativa el caching di pagin — El ridus drasticament el carich del server
  • Tegn i plugin al minim — Meno plugin ativ = prestazion mej
  • Preferiss el contenud static — I sit che poden vess mess in cache in manera agressiva scalen mej

Ultimate Multisite el includ l’integrazion con Cloudflare che automatizza DNS e SSL per i neuv subsit—fortement racomandada per qualunque piattaforma WaaS seria.

SSL e mapping di domini

I browser modern richieden SSL. I tò opzion:

  • Modalità sottocartella: Un certificad SSL unic el coverza tutt
  • Modalità sottodomini: Certificad SSL wildcard (*.yourdomain.com)
  • Domini personalizzad: Ogni domini del client el ga bisogn del sò certificad

I integrazion hosting de Ultimate Multisite (Cloudflare, GridPane, Cloudways, ecc.) automatizzen la provision SSL per i domini personalizzad—quest l’è vun di pussee grand risparmi de temp che ‘l plugin el forniss.

Backup

Gestion di utent: quell che te gh’hee de savè

WordPress Multisite el condivid la tabella di utent tra tücc i subsit. Quest el crea ona situazion unica:

El scenari: John el se registra per un sit su la tò reet. Pussee tard, el visita el sit d’un alter client (el negozi de Alice) e ‘l prova a creà un account per fa un acquist. El ricef un error “email già in dovra”—confondent, vist che ‘l gh’ha mai visitad el sit de Alice prima.

La soluzion: Ultimate Multisite el includ un’opzion ciamada Ativa account multipl (Impostazion → Login & Registration) che la permet a la stessa email de creà account separad su subsit diferent. Ogni account l’è ligad al sò subsit, impedend la collision.

Prossim pass

Adess te gh’hee Ultimate Multisite installad e te capisset i fondament. Ecco cossa fa dopo:

  1. Crea el tò prim Template de sit — Progetta un sit inizial con el tò tema preferid, plugin e contenud d’esempi
  2. Configura Prodott/Pian — Definiss i tò fasce de prezz (Gratis, Basic, Pro, ecc.)
  3. Configura un gateway de pagament — Collega Stripe o PayPal per acetà pagament
  4. Personalizza el tò modul de checkout — Progetta l’esperienza de registrazion per i tò client
  5. Configura un’integrazion hosting — Ativa el mapping automatich di domini e SSL

Consulta la nostra documentazion per guid dettagliad su ciascun de questi argoment.

Te gh’hee bisogn d’aiut?

Ultimate Multisite l’è gratis e open source. Se te ‘l trovet util, considera de lassà ona recension per aiutà i alter a scopril.

Comments

Leave a Reply

Your email address will not be published. Required fields are marked *