<section class="tag-cloud">
<?php
  $tags = get_tags( array(
    'orderby' => 'name',
    'order'   => 'ASC')
  );

foreach( $tags as $tag ) {
  $tag_link = esc_url( get_tag_link( $tag->term_id ) );
  $tag_name = esc_html( $tag->name );
  echo "<a href='". $tag_link ."'><span class='tag'>". $tag_name ."</span></a>";
}
?>
</section>