[DDoS Protection] Programmable Flow Protection

[patriciasantaana]

Summary

Adds page to Advanced DDoS systems around Programmable Flow Protection

Documentation checklist

• Is there a changelog entry (guidelines)? If you don't add one for something awesome and new (however small) — how will our customers find out? Changelogs are automatically posted to RSS feeds, the Discord, and X.
• The change adheres to the documentation style guide.
• If a larger change - such as adding a new page- an issue has been opened in relation to any incorrect or out of date information that this PR fixes.
• Files which have changed name or location have been allocated redirects.

[github-actions]

This pull request requires reviews from CODEOWNERS as it changes files that match the following patterns:

Pattern	Owners
/src/content/docs/ddos-protection/	@patriciasantaana, @cloudflare/pcx-technical-writing

[github-actions]

Preview URL: https://dbbc426e.preview.developers.cloudflare.com
Preview Branch URL: https://patricia-pcx16807-pfp.preview.developers.cloudflare.com

Files with changes (up to 15)

Original Link	Updated Link
https://developers.cloudflare.com/ddos-protection/advanced-ddos-systems/overview/programmable-flow-protection/	https://patricia-pcx16807-pfp.preview.developers.cloudflare.com/ddos-protection/advanced-ddos-systems/overview/programmable-flow-protection/
https://developers.cloudflare.com/ddos-protection/	https://patricia-pcx16807-pfp.preview.developers.cloudflare.com/ddos-protection/
https://developers.cloudflare.com/ddos-protection/about/attack-coverage/	https://patricia-pcx16807-pfp.preview.developers.cloudflare.com/ddos-protection/about/attack-coverage/
https://developers.cloudflare.com/ddos-protection/advanced-ddos-systems/overview/	https://patricia-pcx16807-pfp.preview.developers.cloudflare.com/ddos-protection/advanced-ddos-systems/overview/
https://developers.cloudflare.com/ddos-protection/best-practices/proactive-defense/	https://patricia-pcx16807-pfp.preview.developers.cloudflare.com/ddos-protection/best-practices/proactive-defense/
https://developers.cloudflare.com/ddos-protection/reference/alerts/	https://patricia-pcx16807-pfp.preview.developers.cloudflare.com/ddos-protection/reference/alerts/

[anita-tenjarla]

Could we also please add a section to https://patricia-pcx16807-pfp.preview.developers.cloudflare.com/ddos-protection/advanced-ddos-systems/how-to/create-rule/ to create a rule just for Programmable Flow Protection?

In addition could we please add another subsection within "API Configuration" like https://patricia-pcx16807-pfp.preview.developers.cloudflare.com/ddos-protection/advanced-ddos-systems/api/dns-protection/ but specifically for Programmable Flow Protection? This section could contain all the API calls for GET/PUT/DELETE programs and rules.

[patriciasantaana]

Closing in favor of #28252. All comments are addressed in that PR.