As a SaaS platform, I want to create a self-serve knowledge base with articles about my products. I've been looking for external options like Intercom, HubSpot ServiceHub, etc. but those are super expensive and I want to limit my information to the already existing sub-processors e.g. Atlassian. Has anyone created such an external Knowledge Base using Confluence e.g. like these images? If yes, any how-to links would be highly appreciated.

