chg: [doc] sync with website

Author: adulau

static/documentation/_sources/prerequisites.rst

@@ -26,9 +26,24 @@ For the Web server you can use Gunicorn, uWSGI, Apache or Nginx.
 Hardware
 --------
 
+For the core of the Vulnerability-Lookup service, we recommend the following baseline specifications for a public-facing deployment (running Kvrocks and PostgreSQL):
+
+- 16 CPU cores
+- 64 GB RAM
+- 2 TB NVMe storage
+
+The new VLAI capabilities are straightforward to set up, as we intentionally avoided adding complexity to the core Vulnerability-Lookup software or its dependencies. Instead, we developed a separate component called `ML-Gateway <https://github.com/vulnerability-lookup/ML-Gateway>`_, which is queried by the core service.
+
+The requirements for ML-Gateway are currently minimal. For VLAI Severity, no GPU or specialized hardware is needed, as it uses `a lightweight NLP model <https://huggingface.co/CIRCL/vulnerability-severity-classification-roberta-base>`_ that is loaded at runtime. ML-Gateway requires:
+
+- 4 GB of memory
+- 200 GB of disk space
+- At least 4 vCPU cores
+
+These requirements may increase depending on the VLAI features added in the future.
 
 Network
 -------
 
-The deployment on the different servers requires an Internet connection since
-the updates are retrieved from the GitHub repository.
+Deployment on the different servers requires an Internet connection, as updates are retrieved from the GitHub repository. The feeders also need Internet access to various locations, including Git repositories, HTTP endpoints, and specific APIs.
+