I assume they’re referring to the now cancelled CSAM https://www.wired.com/story/apple-photo-scanning-csam-communication-safety-messages/

For cms you can use whatever you want, its just a container to k8s. I know there’s a few headless cms options here https://jamstack.org/headless-cms/ but as thoughtworks mention theres more than 1000 cms’ to choose from.

For updating via git I’m using flux but I know argo is very popular too

For static hosting you can use any proxy, like nginx or caddy which you could use with for example minio which is a s3 compatible object store that you can use as backend behind the proxy to serve anything

These concepts arent really kubernetes specific, but work well with it. You might as well run these with docker compose or just natively

Are you asking how to deploy apps on kubernetes or how to connect those with kubernetes?