Usually, 2 things at a high level: - Privacy Policy - Terms and Conditions For address and contact, just create a "About us" or "Contact" page and add th

Usually, 2 things at a high level: - Privacy Policy - Terms and Conditions For address and contact, just create a "About us" or "Contact" page and add those information there. Have these in your top level menu on every page. Privacy policy is where you talk about what you do with user data, cookies blah blah. What information do you collect and what you do with it. Check out any well known SAAS and get inspired :). Terms and conditions is where you define the rules of your system. Remember this is your system and you want to set the rules even if you have paying clients. What users can do, what they cannot and should not do. For example, if you offer ecommerce platform, then users cannot sell drugs etc. If users want to cancel their account, what needs to be done and what you offer. Things like that. Oh, and always put a "Last updated" date on top of the Privacy Policy and Terms and Conditions page. This helps reassure that you are constantly looking at this. Don't fool the users though by using dynamic system date:) Finally, whenever you update these, send an automated email to let your users know. Not sure if this required by law in some countries.