iCLUSTA+ is an enterprise shared hosting service from GMO Cloud, Inc., aimed at companies running corporate websites and WordPress sites. It offers one-click WordPress setup, SSD storage, and unlimited email addresses on every plan.

The main differentiator is a full-uptime guarantee, backed by a Service Level Agreement (SLA) and a clustered server setup that keeps the site online if one machine fails. Most competitors stop short of a full uptime guarantee. The service also bundles a free GMO GlobalSign AlphaSSL certificate for the life of the account, and includes a Movable Type commercial license at no extra charge on the Regular and Pro plans.

Free phone, email, and fax support is included for all customers, along with a full refund guarantee. GMO Cloud also offers a separate startup plan for companies founded within the past five years or pre-incorporation founders. A paid vulnerability diagnostic add-on scans WordPress sites for common issues.