diff --git a/google/analytics/admin/v1alpha/BUILD.bazel b/google/analytics/admin/v1alpha/BUILD.bazel
index 7d065170..b50becc7 100644
--- a/google/analytics/admin/v1alpha/BUILD.bazel
+++ b/google/analytics/admin/v1alpha/BUILD.bazel
@@ -153,24 +153,62 @@ go_gapic_assembly_pkg(
 ##############################################################################
 # Python
 ##############################################################################
-# This library is using Python microgenerator.
-# DO NOT OVERRIDE this Python section with autogenerated rules.
 load(
     "@com_google_googleapis_imports//:imports.bzl",
-    py_gapic_assembly_pkg = "py_gapic_assembly_pkg2",
-    py_gapic_library = "py_gapic_library2",
+    "moved_proto_library",
+    "py_gapic_assembly_pkg",
+    "py_gapic_library",
+    "py_grpc_library",
+    "py_proto_library",
+)
+
+moved_proto_library(
+    name = "admin_moved_proto",
+    srcs = [":admin_proto"],
+    deps = [
+        "//google/api:annotations_proto",
+        "//google/api:client_proto",
+        "//google/api:field_behavior_proto",
+        "//google/api:resource_proto",
+        "@com_google_protobuf//:empty_proto",
+        "@com_google_protobuf//:field_mask_proto",
+        "@com_google_protobuf//:timestamp_proto",
+        "@com_google_protobuf//:wrappers_proto",
+    ],
+)
+
+py_proto_library(
+    name = "admin_py_proto",
+    plugin = "@protoc_docs_plugin//:docs_plugin",
+    deps = [":admin_moved_proto"],
+)
+
+py_grpc_library(
+    name = "admin_py_grpc",
+    srcs = [":admin_moved_proto"],
+    deps = [":admin_py_proto"],
 )
 
 py_gapic_library(
     name = "admin_py_gapic",
-    srcs = [":admin_proto"],
+    src = ":admin_proto_with_info",
+    gapic_yaml = "analyticsadmin_gapic.yaml",
     grpc_service_config = "admin_grpc_service_config.json",
+    package = "google.analytics.admin.v1alpha",
+    service_yaml = "analyticsadmin_v1alpha.yaml",
+    deps = [
+        ":admin_py_grpc",
+        ":admin_py_proto",
+    ],
 )
 
+# Open Source Packages
 py_gapic_assembly_pkg(
     name = "google-analytics-admin-v1alpha-py",
     deps = [
         ":admin_py_gapic",
+        ":admin_py_grpc",
+        ":admin_py_proto",
     ],
 )
 
@@ -316,8 +354,8 @@ csharp_grpc_library(
 csharp_gapic_library(
     name = "admin_csharp_gapic",
     srcs = [":admin_proto_with_info"],
-    grpc_service_config = "admin_grpc_service_config.json",
     common_resources_config = "@gax_dotnet//:Google.Api.Gax/ResourceNames/CommonResourcesConfig.json",
+    grpc_service_config = "admin_grpc_service_config.json",
     deps = [
         ":admin_csharp_grpc",
         ":admin_csharp_proto",
diff --git a/google/analytics/admin/v1alpha/analytics_admin.proto b/google/analytics/admin/v1alpha/analytics_admin.proto
index 60d503a9..566a8fec 100644
--- a/google/analytics/admin/v1alpha/analytics_admin.proto
+++ b/google/analytics/admin/v1alpha/analytics_admin.proto
@@ -94,6 +94,13 @@ service AnalyticsAdminService {
     };
   }
 
+  // Returns summaries of all accounts accessible by the caller.
+  rpc ListAccountSummaries(ListAccountSummariesRequest) returns (ListAccountSummariesResponse) {
+    option (google.api.http) = {
+      get: "/v1alpha/accountSummaries"
+    };
+  }
+
   // Lookup for a single "App+Web" Property.
   //
   // Throws "Target not found" if no such property found, if property is not
@@ -1342,3 +1349,28 @@ message GetDataSharingSettingsRequest {
     }
   ];
 }
+
+// Request message for ListAccountSummaries RPC.
+message ListAccountSummariesRequest {
+  // The maximum number of AccountSummary resources to return. The service may
+  // return fewer than this value, even if there are additional pages.
+  // If unspecified, at most 50 resources will be returned.
+  // The maximum value is 200; (higher values will be coerced to the maximum)
+  int32 page_size = 1;
+
+  // A page token, received from a previous `ListAccountSummaries` call.
+  // Provide this to retrieve the subsequent page.
+  // When paginating, all other parameters provided to `ListAccountSummaries`
+  // must match the call that provided the page token.
+  string page_token = 2;
+}
+
+// Response message for ListAccountSummaries RPC.
+message ListAccountSummariesResponse {
+  // Account summaries of all accounts the caller has access to.
+  repeated AccountSummary account_summaries = 1;
+
+  // A token, which can be sent as `page_token` to retrieve the next page.
+  // If this field is omitted, there are no subsequent pages.
+  string next_page_token = 2;
+}
diff --git a/google/analytics/admin/v1alpha/analyticsadmin_v1alpha.yaml b/google/analytics/admin/v1alpha/analyticsadmin_v1alpha.yaml
index ecd6c163..40563f2e 100644
--- a/google/analytics/admin/v1alpha/analyticsadmin_v1alpha.yaml
+++ b/google/analytics/admin/v1alpha/analyticsadmin_v1alpha.yaml
@@ -1,7 +1,7 @@
 type: google.api.Service
 config_version: 3
 name: analyticsadmin.googleapis.com
-title: Analytics Admin API
+title: Google Analytics Admin API
 
 apis:
 - name: google.analytics.admin.v1alpha.AnalyticsAdminService
@@ -76,6 +76,10 @@ authentication:
     oauth:
       canonical_scopes: |-
         https://www.googleapis.com/auth/analytics.readonly
+  - selector: google.analytics.admin.v1alpha.AnalyticsAdminService.ListAccountSummaries
+    oauth:
+      canonical_scopes: |-
+        https://www.googleapis.com/auth/analytics.readonly
   - selector: google.analytics.admin.v1alpha.AnalyticsAdminService.ListAccounts
     oauth:
       canonical_scopes: |-
diff --git a/google/analytics/admin/v1alpha/resources.proto b/google/analytics/admin/v1alpha/resources.proto
index 79bc304c..1c8d91ba 100644
--- a/google/analytics/admin/v1alpha/resources.proto
+++ b/google/analytics/admin/v1alpha/resources.proto
@@ -569,3 +569,43 @@ enum MaximumUserAccess {
   // the Firebase link.
   EDITOR_INCLUDING_LINK_MANAGEMENT = 4;
 }
+
+// A virtual resource representing an overview of an account and
+// all its child App+Web properties.
+message AccountSummary {
+  option (google.api.resource) = {
+    type: "analyticsadmin.googleapis.com/AccountSummary"
+    pattern: "accountSummaries/{account_summary}"
+  };
+
+  // Resource name for this account summary.
+  // Format: accountSummaries/{account_id}
+  // Example: "accountSummaries/1000"
+  string name = 1;
+
+  // Resource name of account referred to by this account summary
+  // Format: accounts/{account_id}
+  // Example: "accounts/1000"
+  string account = 2 [(google.api.resource_reference) = {
+                        type: "analyticsadmin.googleapis.com/Account"
+                      }];
+
+  // Display name for the account referred to in this account summary.
+  string display_name = 3;
+
+  // List of summaries for child accounts of this account.
+  repeated PropertySummary property_summaries = 4;
+}
+
+// A virtual resource representing metadata for an App+Web property.
+message PropertySummary {
+  // Resource name of property referred to by this property summary
+  // Format: properties/{property_id}
+  // Example: "properties/1000"
+  string property = 1 [(google.api.resource_reference) = {
+                         type: "analyticsadmin.googleapis.com/Property"
+                       }];
+
+  // Display name for the property referred to in this account summary.
+  string display_name = 2;
+}