Update from treeverse/lakeFS@e6c502a

understand/use_cases/etl_testing.html

@@ -623,9 +623,9 @@ <h3 id="using-lakefs-playground-on-lakefs-cloud">
 </h3>
 
 
-<p>In this tutorial, we will use <a href="https://demo.lakefs.io/">a lakeFS playground environment</a> to create dev/test data environments for ETL testing. This allows you to spin up a lakeFS instance in a click, create different data environments by simply branching out of your data repository and develop &amp; test data pipelines in these isolated branches.</p>
+<p>In this tutorial, we will use <a href="https://lakefs.cloud/">a lakeFS playground environment</a> to create dev/test data environments for ETL testing. This allows you to spin up a lakeFS instance in a click, create different data environments by simply branching out of your data repository and develop &amp; test data pipelines in these isolated branches.</p>
 
-<p>First, let us spin up a <a href="https://demo.lakefs.io/">playground</a> instance. Once you have a live environment, login to your instance with access and secret keys. Then, you can work with the sample data repository <code class="language-plaintext highlighter-rouge">my-repo</code> that is created for you.</p>
+<p>First, let us spin up a <a href="https://lakefs.cloud/">playground</a> instance. Once you have a live environment, login to your instance with access and secret keys. Then, you can work with the sample data repository <code class="language-plaintext highlighter-rouge">my-repo</code> that is created for you.</p>
 
 <p><img src="/assets/img/iso_env_myrepo.png" alt="sample repository" /></p>