As of mid-2013 NGINX, Inc. the company behind the Nginx project also offers a paid subscription called Nginx Plus. The announcement came as a surprise for the open source community but several companies quickly jumped on the bandwagon and reported amazing improvements in terms of performance and scalability.
As business requirements continue to evolve rapidly, such as the shift to mobile and the explosion of dynamic content on the Web, CIO's are continuously looking for opportunities to increase application performance and development agility, while reducing dependencies on their infrastructure. NGINX Plus provides a flexible, scalable, uniformly applicable solution that was purpose built for these modern, distributed application architectures.
Considering the pricing plans ($1,500 per year per instance) and the additional features made available, this platform is indeed clearly aimed at large corporations looking to integrate Nginx into their global architecture seamlessly and effortlessly. Professional support from the Nginx team is included and discounts can be offered for multiple-instance subscriptions. This book covers the open source version of Nginx only and does not detail advanced functionality offered by Nginx Plus. For more information about the paid subscription, take a look at https://www.nginx.com/.