new image for full stack story

Author: sabine

data/media/success-stories/ahrefs-full-stack-bg.jpg

@@ -1,8 +1,8 @@
 ---
-title: Full-Stack OCaml Web Application
+title: Full-Stack OCaml Web Application With React
 logo: success-stories/ahrefs.svg
 card_logo: success-stories/white/ahrefs.svg
-background: /success-stories/ahrefs-bg.jpg
+background: /success-stories/ahrefs-full-stack-bg.jpg
 theme: blue
 synopsis: "Ahrefs transitioned from PHP/jQuery to full-stack OCaml using Melange and React, eliminating team silos and enabling any engineer to contribute across their entire web application stack."
 url: https://ahrefs.com/
@@ -19,7 +19,7 @@ why_ocaml_reasons:
 
 ## Challenge
 
-Ahrefs is a Singapore-based SaaS company that provides SEO tools and marketing intelligence powered by big data. Since 2011, they've built their business around OCaml, using it for web crawling and data processing to serve thousands of customers worldwide. Today, they're trusted by 44% of Fortune 500 companies and operate as a lean, self-funded organization focused on efficiency.
+[Ahrefs](https://ahrefs.com/) is a Singapore-based SaaS company that provides SEO tools and marketing intelligence powered by big data. Since 2011, they've built their business around OCaml, using it for web crawling and data processing to serve thousands of customers worldwide. Today, they're trusted by 44% of Fortune 500 companies and operate as a lean, self-funded organization focused on efficiency.
 
 By 2017, Ahrefs had built a successful SEO tools business powered by OCaml on the backend, but they faced a bottleneck in web application development. Their frontend was built with PHP and jQuery while their data processing lived in OCaml. Every time frontend developers needed backend data, they had to coordinate with backend engineers to update the APIs.
 

data/success_stories/ahrefs-full-stack-web.md

@@ -19,7 +19,7 @@ why_ocaml_reasons:
 
 ## Challenge
 
-Ahrefs is a Singapore-based SaaS company that provides comprehensive SEO tools and marketing intelligence powered by big data. Since 2011, they've been crawling the entire web daily to maintain extensive databases of backlinks, keywords, and website analytics that help businesses with SEO strategy, competitor analysis, and content optimization. Today, they're trusted by 44% of Fortune 500 companies.
+[Ahrefs](https://ahrefs.com/) is a Singapore-based SaaS company that provides comprehensive SEO tools and marketing intelligence powered by big data. Since 2011, they've been crawling the entire web daily to maintain extensive databases of backlinks, keywords, and website analytics that help businesses with SEO strategy, competitor analysis, and content optimization. Today, they're trusted by 44% of Fortune 500 companies.
 
 Building and operating a web crawler at internet scale presents extraordinary challenges. Ahrefs needed to index billions of web pages continuously, process petabytes of data in real-time, and turn this massive dataset into actionable insights for thousands of customers worldwide. The technical demands are staggering: their systems must handle **500 billion backend requests per day** while maintaining **over 100PB of storage**.