Question on database availability

We want to have a ~1hr presentation for our dev and DBA groups around the criticality of database resilience for businesses. Different methods (irrespective of any specific database though) of database resilience both around "on premise" and cloud font. I am not able to come up with exact steps to move ahead. What are the things we should go through here? Can you suggest how to put it in a consolidated steps wise way or some ideas around it? Maybe some sample document/blog which can provide the details around it. I understand it's a vast topic , so should we mainly divide into two categories like HA(high availability) and DR(Disaster recovery) and talk on those, or does any other side exist too?