n the namespace and migrate all the policies to <code>v1beta1</code>
at the same time. This allows a safer migration as you can make sure everything is working as expected,
and then move forward to the next namespace.</p><h2 id=major-differences>Major differences</h2><p>Before starting the migration, read through the <code>v1beta1</code> <a href=/v1.22/docs/concepts/security/#authentication>authentication</a>
and <a href=/v1.22/docs/concepts/security/#authorization>authorization</a> documentation to underst