Inserting a view in node edit form
It took me a while to find out how to do it in Drupal 8, and since this post is one of the first google hits I'll add the solution here: 

function MODULE_form_node_NODETYPE_alter(&amp;$form, FormStateInterface $form_state, $form_id) {
    ...
    $form['my_embedded_view'] = [
        '#type' =&gt; 'view',
        '#name' =&gt; 'my_view_name',
        '#display_id' =&gt; 'block_1',
        '#arguments' =&gt; [
            'arg1' =&gt; $arg_1,
            'arg2' =&gt; $arg_2,
        ],
        '#weight' =&gt; 30,
    ] ;
...
}


I used a block display for the view, I don't know if it's relevant.