diff --git a/Classes/ServiceProvider.php b/Classes/ServiceProvider.php
new file mode 100644
index 000000000..2efdfb695
--- /dev/null
+++ b/Classes/ServiceProvider.php
@@ -0,0 +1,79 @@
+<?php declare(strict_types=1);
+
+/*
+ * This file is part of the package bk2k/bootstrap-package.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE file that was distributed with this source code.
+ */
+
+namespace BK2K\BootstrapPackage;
+
+use Psr\Container\ContainerInterface;
+use TYPO3\CMS\Core\Package\AbstractServiceProvider;
+use TYPO3\CMS\Core\Package\PackageManager;
+use TYPO3\CMS\Core\Site\Set\SetCollector;
+use TYPO3\CMS\Core\Site\Set\SetDefinition;
+
+/**
+ * @internal
+ */
+class ServiceProvider extends AbstractServiceProvider
+{
+    protected static function getPackagePath(): string
+    {
+        return __DIR__ . '/../';
+    }
+
+    protected static function getPackageName(): string
+    {
+        return 'typo3/cms-core';
+    }
+
+    public function getFactories(): array
+    {
+        return [];
+    }
+
+    public function getExtensions(): array
+    {
+        return [
+            SetCollector::class => [ static::class, 'configureSetCollector' ],
+        ] + parent::getExtensions();
+    }
+
+    public static function configureSetCollector(ContainerInterface $container, SetCollector $setCollector, ?string $path = null): SetCollector
+    {
+        $setCollector = parent::configureSetCollector($container, $setCollector, $path);
+        $availableSets = $setCollector->getSetDefinitions();
+        $bpFullSet = $availableSets['bootstrap-package/full'] ?? null;
+        if ($bpFullSet === null) {
+            return $setCollector;
+        }
+
+        $optionalDependencies = [];
+        if (isset($availableSets['typo3/form'])) {
+            $optionalDependencies[] = 'bootstrap-package/ext-form';
+        }
+        if (isset($availableSets['typo3/seo-sitemap'])) {
+            $optionalDependencies[] = 'bootstrap-package/ext-seo';
+        }
+        if (isset($availableSets['typo3/indexed-search'])) {
+            $optionalDependencies[] = 'bootstrap-package/ext-indexed-search';
+        }
+        if ($container->get(PackageManager::class)->isPackageActive('container')) {
+            $optionalDependencies[] = 'bootstrap-package/ext-container';
+        }
+
+        $setCollector->add(
+            new SetDefinition(...[
+                ...$bpFullSet->toArray(),
+                'dependencies' => [
+                    ...$bpFullSet->dependencies,
+                    ...$optionalDependencies,
+                ],
+            ])
+        );
+        return $setCollector;
+    }
+}
diff --git a/Configuration/Sets/ExtContainer/config.yaml b/Configuration/Sets/ExtContainer/config.yaml
new file mode 100644
index 000000000..ecc037a9d
--- /dev/null
+++ b/Configuration/Sets/ExtContainer/config.yaml
@@ -0,0 +1,2 @@
+name: bootstrap-package/ext-container
+label: 'Bootstrap Package: EXT:container integration'
diff --git a/Configuration/Sets/ExtContainer/setup.typoscript b/Configuration/Sets/ExtContainer/setup.typoscript
new file mode 100644
index 000000000..d369d2b06
--- /dev/null
+++ b/Configuration/Sets/ExtContainer/setup.typoscript
@@ -0,0 +1 @@
+@import 'EXT:bootstrap_package/Configuration/TypoScript/Extension/Container/setup.typoscript'
diff --git a/Configuration/Sets/ExtForm/config.yaml b/Configuration/Sets/ExtForm/config.yaml
new file mode 100644
index 000000000..dd84d54d5
--- /dev/null
+++ b/Configuration/Sets/ExtForm/config.yaml
@@ -0,0 +1,4 @@
+name: bootstrap-package/ext-form
+label: 'Bootstrap Package: EXT:form integration'
+dependencies:
+  - typo3/form
diff --git a/Configuration/Sets/ExtIndexedSearch/config.yaml b/Configuration/Sets/ExtIndexedSearch/config.yaml
new file mode 100644
index 000000000..a650b183a
--- /dev/null
+++ b/Configuration/Sets/ExtIndexedSearch/config.yaml
@@ -0,0 +1,4 @@
+name: bootstrap-package/ext-indexed-search
+label: 'Bootstrap Package: EXT:indexed_search integration'
+dependencies:
+  - typo3/indexed-search
diff --git a/Configuration/Sets/ExtIndexedSearch/setup.typoscript b/Configuration/Sets/ExtIndexedSearch/setup.typoscript
new file mode 100644
index 000000000..69b0f36ef
--- /dev/null
+++ b/Configuration/Sets/ExtIndexedSearch/setup.typoscript
@@ -0,0 +1,16 @@
+plugin.tx_indexedsearch {
+    view {
+        templateRootPaths {
+            20 = EXT:bootstrap_package/Resources/Private/Templates/IndexedSearch/
+            21 = {$plugin.bootstrap_package.view.templateRootPath}IndexedSearch/
+        }
+        partialRootPaths {
+            20 = EXT:bootstrap_package/Resources/Private/Partials/IndexedSearch/
+            21 = {$plugin.bootstrap_package.view.partialRootPath}IndexedSearch/
+        }
+        layoutRootPaths {
+            20 = EXT:bootstrap_package/Resources/Private/Layouts/IndexedSearch/
+            21 = {$plugin.bootstrap_package.view.layoutRootPath}IndexedSearch/
+        }
+    }
+}
diff --git a/Configuration/Sets/ExtSeo/config.yaml b/Configuration/Sets/ExtSeo/config.yaml
new file mode 100644
index 000000000..963c936cd
--- /dev/null
+++ b/Configuration/Sets/ExtSeo/config.yaml
@@ -0,0 +1,4 @@
+name: bootstrap-package/ext-seo
+label: 'Bootstrap Package: EXT:seo integration'
+dependencies:
+  - typo3/seo-sitemap
diff --git a/Configuration/Sets/ExtSeo/setup.typoscript b/Configuration/Sets/ExtSeo/setup.typoscript
new file mode 100644
index 000000000..ebdfcd619
--- /dev/null
+++ b/Configuration/Sets/ExtSeo/setup.typoscript
@@ -0,0 +1,16 @@
+plugin.tx_seo {
+    view {
+        templateRootPaths {
+            20 = EXT:bootstrap_package/Resources/Private/Templates/Seo/
+            21 = {$plugin.bootstrap_package.view.templateRootPath}Seo/
+        }
+        partialRootPaths {
+            20 = EXT:bootstrap_package/Resources/Private/Partials/Seo/
+            21 = {$plugin.bootstrap_package.view.partialRootPath}Seo/
+        }
+        layoutRootPaths {
+            20 = EXT:bootstrap_package/Resources/Private/Layouts/Seo/
+            21 = {$plugin.bootstrap_package.view.layoutRootPath}Seo/
+        }
+    }
+}
diff --git a/Configuration/Sets/Full/config.yaml b/Configuration/Sets/Full/config.yaml
index 2e1d0ecc3..afbbdbda5 100644
--- a/Configuration/Sets/Full/config.yaml
+++ b/Configuration/Sets/Full/config.yaml
@@ -7,3 +7,8 @@ dependencies:
   - bootstrap-package/google-font
   - bootstrap-package/google-tag-manager
   - bootstrap-package/skiplink
+  # optional dependencies added by ServiceProvider
+  # - bootstrap-package/ext-form
+  # - bootstrap-package/ext-indexed-search
+  # - bootstrap-package/ext-seo-sitemap
+  # - bootstrap-package/ext-container
diff --git a/Configuration/Sets/Full/setup.typoscript b/Configuration/Sets/Full/setup.typoscript
index 0d5bc7e76..4d3e364fd 100644
--- a/Configuration/Sets/Full/setup.typoscript
+++ b/Configuration/Sets/Full/setup.typoscript
@@ -1,6 +1,3 @@
-# DEPENDENCIES
-@import 'EXT:bootstrap_package/Configuration/TypoScript/Extension/setup.typoscript'
-
 # HELPER
 @import 'EXT:bootstrap_package/Configuration/TypoScript/Helper/Block.typoscript'
 @import 'EXT:bootstrap_package/Configuration/TypoScript/Helper/PageClass.typoscript'
diff --git a/composer.json b/composer.json
index dec5c108f..36d24eb3b 100644
--- a/composer.json
+++ b/composer.json
@@ -80,6 +80,9 @@
         },
         "typo3/cms": {
             "extension-key": "bootstrap_package",
+			"Package": {
+				"serviceProvider": "BK2K\\BootstrapPackage\\ServiceProvider"
+            },
             "web-dir": ".build/public"
         }
     },