The claims follow a revamp of the Solaris 10 support plans, remote systems management capabilities and migration assistance, along with new training and professional services.
Subscriptions include indemnification and binary and source code compatibility, and provide access to free updates and upgrades to the latest Solaris technologies.
Options range from the developer-focused $49 per-incident support, to a customised site-wide Solaris Everywhere plan.
"Today's announcements are Sun's answer to those who feel under-served by other operating systems," said Peder Ulander, vice president of software marketing at Sun.
"With more applications, more x86 platform support, a larger installed base and cutting edge-technology, Solaris 10 is an ideal platform for delivering web-based applications and services.
"In addition, because Solaris 10 is designed to scale for ramping up new services quickly, it is ideal for start-ups experiencing accelerated growth and requiring reliable support options and a robust catalogue of open source software."
The company also unveiled its Sun Connection service, a life-cycle management platform that aims to simplify the deployment of Solaris in the web tier.
The service does this by enabling customers to provision Solaris, Red Hat, and SUSE systems, manage updates and configuration changes, and eventually redeploy systems.
Dr Kuan Hon criticises GDPR consent emails that will only eviscerate marketing databases and 'media misinformation'
Apple squashes Steam Link app on 'business conflicts' grounds
Philip Hammond wants to forget rules that the UK agreed with the EU to ban non-European companies from the satellites
Instapaper to 'go dark' in Europe until it can work out GDPR compliance