Adminhtml& UI.

<config>
  <router id="admin">
    <route id="vendor" frontName="vendor">
      <module name="Vendor_Module"/>
    </route>
  </router>
</config>

class Index extends Backend\App\Action
{
    // Links this action to an ACL resource
    const ADMIN_RESOURCE = 'Vendor_Module::view';

    public function __construct(
        Context $context,
        private readonly PageFactory $resultPageFactory
    ) {
        parent::__construct($context);
    }

    public function execute()
    {
        return $this->resultPageFactory->create();
    }
}

<config>
  <acl>
    <resources>
      <resource id="Magento_Backend::admin">
        <resource id="Vendor_Module::main"
          title="Vendor Module">
          <resource id="Vendor_Module::view"
            title="View Logs"/>
        </resource>
      </resource>
    </resources>
  </acl>
</config>

<section id="vendor_module" translate="label"
  sortOrder="100" showInStore="1">
  <group id="general" translate="label">
    <field id="enabled" type="select"
      translate="label" sortOrder="10">
      <label>Enable Module</label>
      <source_model>Magento\Config\Model\Config\Source\Yesno</source_model>
    </field>
  </group>
</section>

public function isEnabled(): bool
{
    return (bool) $this->scopeConfig->getValue(
        'vendor_module/general/enabled',
        ScopeInterface::SCOPE_STORE
    );
}

<menu>
  <add id="Vendor_Module::logs"
    title="Logs"
    module="Vendor_Module"
    parent="Magento_Backend::system"
    action="vendor/log/index"
    resource="Vendor_Module::view"
    sortOrder="50"/>
</menu>

<listing>
  <dataSource name="vendor_log_listing_data_source">
    <dataProvider
      class="...\Ui\DataProvider\LogDataProvider"
      name="vendor_log_listing_data_source">
      <settings>
        <requestFieldName>id</requestFieldName>
        <primaryFieldName>entity_id</primaryFieldName>
      </settings>
    </dataProvider>
  </dataSource>
</listing>

public function execute()
{
    $data = $this->getRequest()->getPostValue();
    if ($data) {
        $model = $this->logFactory->create();
        $model->setData($data);
        $this->logRepository->save($model);
        $this->messageManager->addSuccessMessage('Saved.');
    }
    return $this->resultRedirectFactory->create()
        ->setPath('*/*/');
}