Start with the job your documentation must do
A hypothetical SaaS team selects a documentation tool with an impressive feature list. Yet a new support colleague cannot tell which access instructions apply to their role. More features have not solved the task.
Customer troubleshooting, employee learning, API integration and controlled delivery need different capabilities. Start with the audience's work and the content you already have. One organization may reasonably use several connected systems with clear ownership rather than force every knowledge need into one tool.