- PCN – Product Change Notification
Formal notice informing customers about changes to a product (hardware, firmware, or manufacturing process), enabling impact assessment and planning. - PDN – Product Discontinuation Notification
Notice announcing the end-of-life of a product, including key dates and replacement options to ensure business continuity. - PSN – Product Support Notification
Notification providing updates on product support status (maintenance, updates, end-of-support) to help manage lifecycle and system sustainability.

