There are several options to install Ambar. Pros and cons of each version read here.
You can buy Ambar Cloud instance for 8$/month. No setup required, sign up and upload your docs.
You can buy prebuilt Docker images of Ambar for 50$. It's one time payment. This small fee helps us stay motivated and develop Ambar.
If you are an enthusiast you can build Docker images of Ambar from scratch.The brief instruction available on GitHub