A backup strategy should start with two questions: how much recent data can the business afford to lose, and how long can the service be unavailable during recovery? Those answers guide backup frequency and restore design.
What to consider
Frequently changing sites such as ecommerce stores may need more frequent database protection than static marketing sites. Keep enough historical restore points to recover from problems that are discovered days after they begin.
Do not treat a successful backup job as proof of recoverability. Periodic restore testing is the only reliable way to confirm that the data, permissions and application dependencies can be recovered.