IGNITE-15793: updated list of events
diff --git a/events.html b/events.html
index 8bee0b3..53dc7d5 100644
--- a/events.html
+++ b/events.html
@@ -115,13 +115,97 @@
         </div>
     </div>
     <div class="col-md-10 ">
+        <section id="backward-compatibility-on-the-example-of-apache-ignite-why-does-it-hurt-so-much">
+            <h3 style="display:inline-block;">Backward compatibility on the example of Apache Ignite. Why does it hurt so much?
+                <a href="/events.html#backward-compatibility-on-the-example-of-apache-ignite-why-does-it-hurt-so-much"><i
+                        class="fa fa-anchor"></i></a>
+            </h3>
+            <div class="event-date">mergeconf, Nikolay Izhikov</div>
+            <div class="event-date">November 13, 2021</div>
+
+            <p>I am developing an Apache Ignite distributed database. Our product provides backward compatibility between versions. What do you need to think about for backward compatibility? What is Backward Compatibility for Developers? How do I test it? Why does it hurt so much? How to relieve pain? I will tell you about all this with the code examples.</p>
+
+            <div class="row">
+                    <div class=" col-md-9  news-readmore">
+                    <p>
+                        <a href="https://mergeconf.ru/development/opensource/izhikov" target="_blank" rel="noopener">Read more</a>
+                    </p>
+                </div>
+                <div class=" col-md-3  ">
+
+                    
+                    <div class="a2a_kit a2a_kit_size_28 a2a_default_style news-socialmedia-icons"
+                        data-a2a-url="https://mergeconf.ru/development/opensource/izhikov"
+                        data-a2a-title="Backward compatibility on the example of Apache Ignite. Why does it hurt so much?">
+                        <a class="a2a_button_twitter"></a>
+                        <a class="a2a_button_linkedin"></a>
+                        <a class="a2a_button_facebook"></a>
+                        <a class="a2a_dd" href="https://www.addtoany.com/share"></a>
+                    </div>
+                </div>
+            </div>
+            
+        </section>
+    </div>
+</div>
+
+<div class="row row-event">
+    <div class="col-md-2 d-none d-md-block">
+        <div class="round-icon-block">
+            <img src="images/conferences.svg" alt="Conference logo">
+            <p>Conference</p>
+        </div>
+    </div>
+    <div class="col-md-10 ">
+        <section id="ignite-summit-cloud-edition">
+            <h3 style="display:inline-block;">Ignite Summit: Cloud Edition 
+                <a href="/events.html#ignite-summit-cloud-edition"><i
+                        class="fa fa-anchor"></i></a>
+            </h3>
+            <div class="event-date">Ignite Summit: Cloud Edition </div>
+            <div class="event-date">November 15-16, 2021</div>
+
+            <p>On November 15 and 16, 2021a free virtual event—Ignite Summit: Cloud Edition will be held. The conference is for architects and developers who use or are interested in using Apache Ignite in the cloud. On November 15, 2021, free training sessions for EMEA and the Americas will be offered. On November 16, 2021, Ignite experts will share architectural insights and practical tips for solving challenges in cloud environments.</p>
+
+            <div class="row">
+                    <div class=" col-md-9  news-readmore">
+                    <p>
+                        <a href="https://ignite-summit.org/" target="_blank" rel="noopener">Read more</a>
+                    </p>
+                </div>
+                <div class=" col-md-3  ">
+
+                    
+                    <div class="a2a_kit a2a_kit_size_28 a2a_default_style news-socialmedia-icons"
+                        data-a2a-url="https://ignite-summit.org/"
+                        data-a2a-title="Ignite Summit: Cloud Edition ">
+                        <a class="a2a_button_twitter"></a>
+                        <a class="a2a_button_linkedin"></a>
+                        <a class="a2a_button_facebook"></a>
+                        <a class="a2a_dd" href="https://www.addtoany.com/share"></a>
+                    </div>
+                </div>
+            </div>
+            
+        </section>
+    </div>
+</div>
+
+<div class="row row-event">
+    <div class="col-md-2 d-none d-md-block">
+        <div class="round-icon-block">
+            <img src="images/conferences.svg" alt="Conference logo">
+            <p>Conference</p>
+        </div>
+    </div>
+    <div class="col-md-10 ">
         <section id="rebalancing-in-a-distributed-database-how-to-catch-up-with-the-state-of-the-node-to-the-state-of-the-cluster">
             <h3 style="display:inline-block;">Rebalancing in a distributed database. How to catch up with the state of the node to the state of the cluster?
                 <a href="/events.html#rebalancing-in-a-distributed-database-how-to-catch-up-with-the-state-of-the-node-to-the-state-of-the-cluster"><i
                         class="fa fa-anchor"></i></a>
             </h3>
             <div class="event-date">Highload++, Vlad Pyatkov</div>
-            <div class="event-date">November 25, 2021</div>
+            <div class="event-date">March 18, 2022</div>
 
             <p>The report will present the concept of historical rebalancing, implemented in the Apache Ignite distributed database.</p>
 
@@ -186,6 +270,7 @@
                     <!-- {{past_events}} -->
 
 
+
                     <div class="row row-event">
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