Our client is a legacy bank with more than 500 users and many servers running the solution. We deployed the first API on Azure more than a year ago and hope to deploy others over time. 

We are moving to Azure because it includes many tools that make it more scalable and efficient such as being able to change templates and VMs, working with Terraform and Kubernetes, and using Docker containers. We don't have to type a million things to deploy a VM and Azure includes automatic connection to a vault containing the secrets. We use an open stack and it is unknown if this will be transferred to Azure.

Before partnering with GigaSpaces and Cloudify, we evaluated many tools, including Red Hat CloudForms/OpenShift, as well as Ansible, Puppet, Chef, StackStorm, Ayehu and others.

We did not evaluate other options.

We also evaluated Brooklyn and Alien4Cloud. None of them offered stable TOSCA blueprint support.