Files and database — daily; keep several copies, including off the main server. Once a month check that the site really restores from a backup.
What to prepare
Briefly describe your project, current platform, goal and deadline, and leave one convenient contact. Do not send passwords, documents or confidential material through the public form.
How to move forward
Explore the relevant service or ask a question in the chat. For a practical estimate, submit an enquiry for the team to review.