diff --git a/ati-ti/index.php b/ati-ti/index.php
index 05e19d0..a088790 100644
--- a/ati-ti/index.php
+++ b/ati-ti/index.php
@@ -57,7 +57,7 @@ include "../includes/courses.php";
     <li><a href="web_architecture.pdf">Web Architecture</a></li>
     <li><a href="service_oriented_architecture.pdf">Service Oriented Architecture</a></li>
     <li><a href="web_service.pdf">Web Services Architectures</a></li>
-    <li>Search Engines Architectures</li>
+    <li><a href="search_engine_architecture.pdf">Search Engines Architectures</a></li>
     <li>E-Business &amp; E-Commerce System Architectures</li>
     <li>Web 2.0 &amp; Social Networks Architectures</li>
     <li>Mobile System &amp; Pervasive Computing Architectures</li>
diff --git a/ati-ti/search_engine_architecture.pdf b/ati-ti/search_engine_architecture.pdf
new file mode 100644
index 0000000..4d67daf
Binary files /dev/null and b/ati-ti/search_engine_architecture.pdf differ