> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/ecom/get-started/glossary.md).

# Glossary

Use these terms consistently across your integration.

| Term               | Definition                                                                                                                                                            |
| ------------------ | --------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| 3DS                | EMV 3-D Secure authentication protocol as specified by EMVCo.                                                                                                         |
| Card-on-file (COF) | This is when a business, with the end user's consent, stores the payment card data. The end user can then reuse the details for future payments and faster checkouts. |
| CNP                | Card Not Present. Name for transaction where the card is not entered in a terminal, typically e-commerce.                                                             |
| Detokenization     | The process of mapping the token back to its original PAN value.                                                                                                      |
| DPAN               | Digitized Primary Account Number                                                                                                                                      |
| FPAN               | Funding Primary Account Number                                                                                                                                        |
| LCM                | Life Cycle Management                                                                                                                                                 |
| MDES               | Mastercard digital enablement service                                                                                                                                 |
| PAN                | Primary Account Number                                                                                                                                                |
| PSP                | Payment Service Provider                                                                                                                                              |
| Token requestor    | An e-commerce merchant or wallet provider (a wallet application installed in a device) as per EMV definition.                                                         |
| TSP                | Token Service Provider                                                                                                                                                |
| VTS                | Visa Token Service. Equivalent of MDES for Mastercard.                                                                                                                |


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