Some products or services are seen as being appropriate for a particular situation or occasion.
Meaning, that the customer is looking for specific products on specific times or occasions.
Occasion segmentation is widely used nowadays throughout the web by many retailers
FTD.com:- Website through which you can order flowers to be delivered to them or their loved ones. It understands that different occasions demand different flower arrangements. Therefore they implement occasion segmentation. Like birthday present, “get well wish” or a sympathy arrangement.