Apache CloudStack vs. AppFog (discontinued) vs. Hystax OptScale

Whether our clients are VPS hosting providers or operate private cloud infrastructure for their internal enterprise requirements, CloudStack provides solutions in an easy to implement and operate way that is simple to provide training for. The learning curve for our customesr adopting CloudStack for the management of their cloud infrastructure is shallow, enabling our clients to come up to speed quickly without having to outsource their administrative functions any longer than necessary

It was very good to use in small scale projects. Considering the high end projects with many instances and multi-platform architectures, it is better to test before the application is deployed. I think few of the questions can be general - who are the system users and what size is the application focussing on? How much resources are required? Will the application require any additional services?

Incentivized

• Low-cost solution
• Open-source
• Engaged community
• Solid documentation
• Is a very reliable tool for orchestration with good usability

Incentivized

• Quick deployment of pre-built virtual machines
• Some of the virtual machines also are readily available with a pack of softwares
• Good Stability. Using it as a student, I have never experienced any downtime issues with the projects deployed on AppFog.

Incentivized

• Sometimes you can find undocumented bugs that can compromise the entire infrastructure.
• [If] you don't have an official support channel, you have try to find out the source of the problem by yourself.
• Volume size limitation. Other players allow you to create volumes up to 64TB while ACS allows only 2TB volumes

• Though it is good and easy for developers, it lacks operational activities and monitoring tools.
• It is easy to deploy WAR on AppFog with its console but sometimes it can lack on the performance and feasibility.

Incentivized

The University, my first large implementation, had a big issue with 149 small data centers spread on São Paulo State, this data centers costs to university were very high, the consolidation idea in two data centers were awesome, but were worried with the management, so we adopted ACS to management of all 576 physical hosts. Now a days the university is delivering IaaS for all staff, students, teachers and researchers, they are using these resources to delivery services to their clients and have a great results in research area

Primarily because it used to have a good free tier earlier, which it does not anymore. It's simple, and things are available to use. Compared to it's competitors, it does has less features, but that kind of acts in its favor. That adds to the simplicity, and ease of use for a new user.

Incentivized

• Low-cost solution (free and open-source)
• More than 2000 users using it simultaneously
• Stable and reliable
• Up and running since 2012

Incentivized

• Our project was deployed with good efficiency and easily accessible.
• The platform was much recommeded across the groups and peers.

Incentivized