diff --git a/apiserver/apimodels/projects.py b/apiserver/apimodels/projects.py
index 0cbfb3f..017de80 100644
--- a/apiserver/apimodels/projects.py
+++ b/apiserver/apimodels/projects.py
@@ -1,5 +1,6 @@
+from enum import Enum
+
 from jsonmodels import models, fields
-from jsonmodels.fields import EmbeddedField
 
 from apiserver.apimodels import ListField, ActualEnumField, DictField
 from apiserver.apimodels.organization import TagsRequest
@@ -61,6 +62,12 @@ class ChildrenCondition(models.Base):
     system_tags = fields.ListField([str])
 
 
+class ProjectChildrenType(Enum):
+    pipeline = "pipeline"
+    report = "report"
+    dataset = "dataset"
+
+
 class ProjectsGetRequest(models.Base):
     include_dataset_stats = fields.BoolField(default=False)
     include_stats = fields.BoolField(default=False)
@@ -73,4 +80,4 @@ class ProjectsGetRequest(models.Base):
     shallow_search = fields.BoolField(default=False)
     search_hidden = fields.BoolField(default=False)
     allow_public = fields.BoolField(default=True)
-    children_condition = EmbeddedField(ChildrenCondition)
+    children_type = ActualEnumField(ProjectChildrenType)
diff --git a/apiserver/bll/project/project_bll.py b/apiserver/bll/project/project_bll.py
index 2656f0c..5716463 100644
--- a/apiserver/bll/project/project_bll.py
+++ b/apiserver/bll/project/project_bll.py
@@ -22,6 +22,7 @@ from mongoengine import Q, Document
 
 from apiserver import database
 from apiserver.apierrors import errors
+from apiserver.apimodels.projects import ProjectChildrenType
 from apiserver.config_repo import config
 from apiserver.database.model import EntityVisibility, AttributedDocument
 from apiserver.database.model.base import GetMixin
@@ -44,9 +45,15 @@ from .sub_projects import (
 
 log = config.logger(__file__)
 max_depth = config.get("services.projects.sub_projects.max_depth", 10)
+reports_project_name = ".reports"
+reports_tag = "reports"
+dataset_tag = "dataset"
+pipeline_tag = "pipeline"
 
 
 class ProjectBLL:
+    child_classes = (Task, Model)
+
     @classmethod
     def merge_project(
         cls, company, source_id: str, destination_id: str
@@ -81,7 +88,7 @@ class ProjectBLL:
             )
 
         moved_entities = 0
-        for entity_type in (Task, Model):
+        for entity_type in cls.child_classes:
             moved_entities += entity_type.objects(
                 company=company,
                 project=source_id,
@@ -724,7 +731,7 @@ class ProjectBLL:
             projects_query &= Q(id__in=project_ids)
 
         res = set(Project.objects(projects_query).distinct(field="user"))
-        for cls_ in (Task, Model):
+        for cls_ in cls.child_classes:
             res |= set(cls_.objects(query).distinct(field="user"))
 
         return res
@@ -759,46 +766,49 @@ class ProjectBLL:
         users: Sequence[str] = None,
         project_ids: Optional[Sequence[str]] = None,
         allow_public: bool = True,
-        children_condition: Mapping[str, Any] = None,
+        children_type: ProjectChildrenType = None,
     ) -> Tuple[Sequence[str], Sequence[str]]:
         """
-        Get the projects ids matching children_condition (if passed) or where the passed user created any tasks
+        Get the projects ids with children matching children_type (if passed) or created by the passed user
         including all the parents of these projects
         If project ids are specified then filter the results by these project ids
         """
-        if not (users or children_condition):
+        if not (users or children_type):
             raise errors.bad_request.ValidationError(
-                "Either active users or children_condition should be specified"
+                "Either active users or children_type should be specified"
             )
 
-        projects_query = Project.prepare_query(
-            company, parameters=children_condition, allow_public=allow_public
+        query = (
+            get_company_or_none_constraint(company)
+            if allow_public
+            else Q(company=company)
         )
-        if children_condition:
-            contained_entities_query = None
-        else:
-            contained_entities_query = (
-                get_company_or_none_constraint(company)
-                if allow_public
-                else Q(company=company)
-            )
-
         if users:
-            user_query = Q(user__in=users)
-            projects_query &= user_query
-            if contained_entities_query:
-                contained_entities_query &= user_query
+            query &= Q(user__in=users)
+
+        if children_type == ProjectChildrenType.dataset:
+            project_query = query & Q(system_tags__in=[dataset_tag])
+            entity_queries = {}
+        elif children_type == ProjectChildrenType.pipeline:
+            project_query = query & Q(system_tags__in=[pipeline_tag])
+            entity_queries = {}
+        elif children_type == ProjectChildrenType.report:
+            project_query = None
+            entity_queries = {Task: query & Q(system_tags__in=[reports_tag])}
+        else:
+            project_query = query
+            entity_queries = {entity_cls: query for entity_cls in cls.child_classes}
 
         if project_ids:
             ids_with_children = _ids_with_children(project_ids)
-            projects_query &= Q(id__in=ids_with_children)
-            if contained_entities_query:
-                contained_entities_query &= Q(project__in=ids_with_children)
+            if project_query:
+                project_query &= Q(id__in=ids_with_children)
+            for entity_cls in entity_queries:
+                entity_queries[entity_cls] &= Q(project__in=ids_with_children)
 
-        res = {p.id for p in Project.objects(projects_query).only("id")}
-        if contained_entities_query:
-            for cls_ in (Task, Model):
-                res |= set(cls_.objects(contained_entities_query).distinct(field="project"))
+        res = {p.id for p in Project.objects(project_query).only("id")} if project_query else set()
+        for cls_, query_ in entity_queries.items():
+            res |= set(cls_.objects(query_).distinct(field="project"))
 
         res = list(res)
         if not res:
diff --git a/apiserver/bll/project/project_cleanup.py b/apiserver/bll/project/project_cleanup.py
index 2ba33f6..1a2d601 100644
--- a/apiserver/bll/project/project_cleanup.py
+++ b/apiserver/bll/project/project_cleanup.py
@@ -1,3 +1,4 @@
+from collections import defaultdict
 from typing import Tuple, Set, Sequence
 
 import attr
@@ -15,6 +16,7 @@ from apiserver.database.model import EntityVisibility
 from apiserver.database.model.model import Model
 from apiserver.database.model.project import Project
 from apiserver.database.model.task.task import Task, ArtifactModes, TaskType
+from .project_bll import ProjectBLL
 from .sub_projects import _ids_with_children
 
 log = config.logger(__file__)
@@ -40,9 +42,9 @@ def validate_project_delete(company: str, project_id: str):
     is_pipeline = "pipeline" in (project.system_tags or [])
     project_ids = _ids_with_children([project_id])
     ret = {}
-    for cls in (Task, Model):
+    for cls in ProjectBLL.child_classes:
         ret[f"{cls.__name__.lower()}s"] = cls.objects(project__in=project_ids).count()
-    for cls in (Task, Model):
+    for cls in ProjectBLL.child_classes:
         query = dict(
             project__in=project_ids, system_tags__nin=[EntityVisibility.archived.value]
         )
@@ -98,9 +100,10 @@ def delete_project(
                 )
 
     if not delete_contents:
-        for cls in (Model, Task):
-            updated_count = cls.objects(project__in=project_ids).update(project=None)
-        res = DeleteProjectResult(disassociated_tasks=updated_count)
+        disassociated = defaultdict(int)
+        for cls in ProjectBLL.child_classes:
+            disassociated[cls] = cls.objects(project__in=project_ids).update(project=None)
+        res = DeleteProjectResult(disassociated_tasks=disassociated[Task])
     else:
         deleted_models, model_event_urls, model_urls = _delete_models(
             company=company, projects=project_ids
diff --git a/apiserver/schema/services/projects.conf b/apiserver/schema/services/projects.conf
index 7ffe9df..95ee096 100644
--- a/apiserver/schema/services/projects.conf
+++ b/apiserver/schema/services/projects.conf
@@ -621,16 +621,10 @@ get_all_ex {
         }
     }
     "2.24": ${get_all_ex."2.23"} {
-        request.properties.children_condition {
-            description: The filter that any of the child projects should match in order that the parent will be included
-            type: object
-            properties {
-                system_tags {
-                    description: The list of system tags to match from
-                    type: string
-                }
-            }
-            additionalProperties: true
+        request.properties.children_type {
+            description: If specified that only the projects under which the entities of this type can be found will be returned
+            type: string
+            enum: [pipeline, report, dataset]
         }
     }
 }
diff --git a/apiserver/services/projects.py b/apiserver/services/projects.py
index 7d1c324..c17aa7c 100644
--- a/apiserver/services/projects.py
+++ b/apiserver/services/projects.py
@@ -1,4 +1,4 @@
-from typing import Sequence
+from typing import Sequence, Optional
 
 import attr
 from mongoengine import Q
@@ -18,9 +18,11 @@ from apiserver.apimodels.projects import (
     ProjectOrNoneRequest,
     ProjectRequest,
     ProjectModelMetadataValuesRequest,
+    ProjectChildrenType,
 )
 from apiserver.bll.organization import OrgBLL, Tags
 from apiserver.bll.project import ProjectBLL, ProjectQueries
+from apiserver.bll.project.project_bll import dataset_tag, pipeline_tag, reports_tag
 from apiserver.bll.project.project_cleanup import (
     delete_project,
     validate_project_delete,
@@ -28,6 +30,7 @@ from apiserver.bll.project.project_cleanup import (
 from apiserver.database.errors import translate_errors_context
 from apiserver.database.model import EntityVisibility
 from apiserver.database.model.project import Project
+from apiserver.database.model.task.task import TaskType
 from apiserver.database.utils import (
     parse_from_call,
     get_company_or_none_constraint,
@@ -96,6 +99,17 @@ def _adjust_search_parameters(data: dict, shallow_search: bool):
         data["parent"] = [None]
 
 
+def _get_filter_from_children_type(type_: ProjectChildrenType) -> Optional[dict]:
+    if type_ == ProjectChildrenType.dataset:
+        return {"system_tags": [dataset_tag], "type": [TaskType.data_processing]}
+    if type_ == ProjectChildrenType.pipeline:
+        return {"system_tags": [pipeline_tag], "type": [TaskType.controller]}
+    if type_ == ProjectChildrenType.report:
+        return {"system_tags": [reports_tag], "type": [TaskType.report]}
+
+    return None
+
+
 @endpoint("projects.get_all_ex", request_data_model=ProjectsGetRequest)
 def get_all_ex(call: APICall, company_id: str, request: ProjectsGetRequest):
     data = call.data
@@ -115,15 +129,13 @@ def get_all_ex(call: APICall, company_id: str, request: ProjectsGetRequest):
         data, shallow_search=request.shallow_search,
     )
     selected_project_ids = None
-    if request.active_users or request.children_condition:
+    if request.active_users or request.children_type:
         ids, selected_project_ids = project_bll.get_projects_with_selected_children(
             company=company_id,
             users=request.active_users,
             project_ids=requested_ids,
             allow_public=allow_public,
-            children_condition=request.children_condition.to_struct()
-            if request.children_condition
-            else None,
+            children_type=request.children_type,
         )
         if not ids:
             return {"projects": []}
@@ -140,33 +152,42 @@ def get_all_ex(call: APICall, company_id: str, request: ProjectsGetRequest):
     if not projects:
         return {"projects": projects, **ret_params}
 
-    project_ids = list({project["id"] for project in projects})
-    if request.check_own_contents:
-        contents = project_bll.calc_own_contents(
-            company=company_id,
-            project_ids=project_ids,
-            filter_=request.include_stats_filter,
-            users=request.active_users,
-        )
-        for project in projects:
-            project.update(**contents.get(project["id"], {}))
-
     conform_output_tags(call, projects)
-    if request.include_stats:
-        stats, children = project_bll.get_project_stats(
-            company=company_id,
-            project_ids=project_ids,
-            specific_state=request.stats_for_state,
-            include_children=request.stats_with_children,
-            search_hidden=request.search_hidden,
-            filter_=request.include_stats_filter,
-            users=request.active_users,
-            selected_project_ids=selected_project_ids,
-        )
+    project_ids = list({project["id"] for project in projects})
 
-        for project in projects:
-            project["stats"] = stats[project["id"]]
-            project["sub_projects"] = children[project["id"]]
+    if request.check_own_contents or request.include_stats:
+        if request.children_type and not request.include_stats_filter:
+            filter_ = _get_filter_from_children_type(request.children_type)
+            search_hidden = True if filter_ else request.search_hidden
+        else:
+            filter_ = request.include_stats_filter
+            search_hidden = request.search_hidden
+
+        if request.check_own_contents:
+            contents = project_bll.calc_own_contents(
+                company=company_id,
+                project_ids=project_ids,
+                filter_=filter_,
+                users=request.active_users,
+            )
+            for project in projects:
+                project.update(**contents.get(project["id"], {}))
+
+        if request.include_stats:
+            stats, children = project_bll.get_project_stats(
+                company=company_id,
+                project_ids=project_ids,
+                specific_state=request.stats_for_state,
+                include_children=request.stats_with_children,
+                search_hidden=search_hidden,
+                filter_=filter_,
+                users=request.active_users,
+                selected_project_ids=selected_project_ids,
+            )
+
+            for project in projects:
+                project["stats"] = stats[project["id"]]
+                project["sub_projects"] = children[project["id"]]
 
     if request.include_dataset_stats:
         dataset_stats = project_bll.get_dataset_stats(
diff --git a/apiserver/services/reports.py b/apiserver/services/reports.py
index 689d744..d29afb5 100644
--- a/apiserver/services/reports.py
+++ b/apiserver/services/reports.py
@@ -16,6 +16,7 @@ from apiserver.apimodels.reports import (
 )
 from apiserver.apierrors import errors
 from apiserver.apimodels.base import UpdateResponse
+from apiserver.bll.project.project_bll import reports_project_name, reports_tag
 from apiserver.services.utils import process_include_subprojects, sort_tags_response
 from apiserver.bll.organization import OrgBLL
 from apiserver.bll.project import ProjectBLL
@@ -42,8 +43,6 @@ project_bll = ProjectBLL()
 task_bll = TaskBLL()
 
 
-reports_project_name = ".reports"
-reports_tag = "reports"
 update_fields = {
     "name",
     "tags",
@@ -80,7 +79,9 @@ def update_report(call: APICall, company_id: str, request: UpdateReportRequest):
     if not partial_update_dict:
         return UpdateResponse(updated=0)
 
-    allowed_for_published = set(partial_update_dict.keys()).issubset({"tags", "name", "comment"})
+    allowed_for_published = set(partial_update_dict.keys()).issubset(
+        {"tags", "name", "comment"}
+    )
     if task.status != TaskStatus.created and not allowed_for_published:
         raise errors.bad_request.InvalidTaskStatus(
             expected=TaskStatus.created, status=task.status
diff --git a/apiserver/tests/automated/test_subprojects.py b/apiserver/tests/automated/test_subprojects.py
index 44c327a..52b56ae 100644
--- a/apiserver/tests/automated/test_subprojects.py
+++ b/apiserver/tests/automated/test_subprojects.py
@@ -36,27 +36,56 @@ class TestSubProjects(TestService):
     def test_query_children(self):
         test_root_name = "TestQueryChildren"
         test_root = self._temp_project(name=test_root_name)
-        child_with_tag = self._temp_project(
-            name=f"{test_root_name}/Project1/WithTag", system_tags=["test"]
+        dataset_project = self._temp_project(
+            name=f"{test_root_name}/Project1/Dataset", system_tags=["dataset"]
         )
-        child_without_tag = self._temp_project(name=f"{test_root_name}/Project2/WithoutTag")
-
-        projects = self.api.projects.get_all_ex(parent=[test_root], shallow_search=True).projects
-        self.assertEqual({p.basename for p in projects}, {"Project1", "Project2"})
+        self._temp_task(
+            name="dataset task",
+            type="data_processing",
+            system_tags=["dataset"],
+            project=dataset_project,
+        )
+        self._temp_task(name="regular task", project=dataset_project)
+        pipeline_project = self._temp_project(
+            name=f"{test_root_name}/Project2/Pipeline", system_tags=["pipeline"]
+        )
+        self._temp_task(
+            name="pipeline task",
+            type="controller",
+            system_tags=["pipeline"],
+            project=pipeline_project,
+        )
+        self._temp_task(name="regular task", project=pipeline_project)
+        report_project = self._temp_project(name=f"{test_root_name}/Project3")
+        self._temp_report(name="test report", project=report_project)
+        self._temp_task(name="regular task", project=report_project)
 
         projects = self.api.projects.get_all_ex(
-            parent=[test_root], children_condition={"system_tags": ["test"]}, shallow_search=True
+            parent=[test_root], shallow_search=True, include_stats=True
         ).projects
-        self.assertEqual({p.basename for p in projects}, {"Project1"})
-        projects = self.api.projects.get_all_ex(
-            parent=[projects[0].id], children_condition={"system_tags": ["test"]}, shallow_search=True
-        ).projects
-        self.assertEqual(projects[0].id, child_with_tag)
+        self.assertEqual(
+            {p.basename for p in projects}, {f"Project{idx+1}" for idx in range(3)}
+        )
+        for p in projects:
+            self.assertEqual(
+                p.stats.active.total_tasks,
+                2
+                if p.basename in ("Project1", "Project2")
+                else 1
+            )
 
-        projects = self.api.projects.get_all_ex(
-            parent=[test_root], children_condition={"system_tags": ["not existent"]}, shallow_search=True
-        ).projects
-        self.assertEqual(len(projects), 0)
+        for i, type_ in enumerate(("dataset", "pipeline", "report")):
+            projects = self.api.projects.get_all_ex(
+                parent=[test_root],
+                children_type=type_,
+                shallow_search=True,
+                include_stats=True,
+            ).projects
+            self.assertEqual({p.basename for p in projects}, {f"Project{i+1}"})
+            p = projects[0]
+            self.assertEqual(
+                p.stats.active.total_tasks, 1
+            )
 
     def test_project_aggregations(self):
         """This test requires user with user_auth_only... credentials in db"""
@@ -323,12 +352,21 @@ class TestSubProjects(TestService):
             **kwargs,
         )
 
-    def _temp_task(self, client=None, **kwargs):
+    def _temp_report(self, name, **kwargs):
+        return self.create_temp(
+            "reports",
+            name=name,
+            object_name="task",
+            delete_params=self.delete_params,
+            **kwargs,
+        )
+
+    def _temp_task(self, client=None, name=None, type=None, **kwargs):
         return self.create_temp(
             "tasks",
             delete_params=self.delete_params,
-            type="testing",
-            name=db_id(),
+            type=type or "testing",
+            name=name or db_id(),
             input=dict(view=dict()),
             client=client,
             **kwargs,
diff --git a/apiserver/tests/automated/test_tasks_delete.py b/apiserver/tests/automated/test_tasks_delete.py
index 1f4652e..e589eff 100644
--- a/apiserver/tests/automated/test_tasks_delete.py
+++ b/apiserver/tests/automated/test_tasks_delete.py
@@ -50,7 +50,9 @@ class TestTasksResetDelete(TestService):
         self.assertEqual(res.urls.artifact_urls, [])
 
         task = self.new_task()
-        (_, published_model_urls), (model, draft_model_urls) = self.create_task_models(task)
+        (_, published_model_urls), (model, draft_model_urls) = self.create_task_models(
+            task
+        )
         artifact_urls = self.send_artifacts(task)
         event_urls = self.send_debug_image_events(task)
         event_urls.update(self.send_plot_events(task))
@@ -74,7 +76,12 @@ class TestTasksResetDelete(TestService):
         self.api.tasks.reset(task=task, force=True)
 
         # test urls
-        task, (published_model_urls, draft_model_urls), artifact_urls, event_urls = self.create_task_with_data()
+        (
+            task,
+            (published_model_urls, draft_model_urls),
+            artifact_urls,
+            event_urls,
+        ) = self.create_task_with_data()
         res = self.api.tasks.reset(task=task, force=True, return_file_urls=True)
         self.assertEqual(set(res.urls.model_urls), draft_model_urls)
         self.assertEqual(set(res.urls.event_urls), event_urls)
@@ -101,13 +108,18 @@ class TestTasksResetDelete(TestService):
 
         # with delete_contents flag
         project = self.new_project()
-        task, (published_model_urls, draft_model_urls), artifact_urls, event_urls = self.create_task_with_data(
-            project=project
-        )
+        (
+            task,
+            (published_model_urls, draft_model_urls),
+            artifact_urls,
+            event_urls,
+        ) = self.create_task_with_data(project=project)
         res = self.api.projects.delete(
             project=project, force=True, delete_contents=True
         )
-        self.assertEqual(set(res.urls.model_urls), published_model_urls | draft_model_urls)
+        self.assertEqual(
+            set(res.urls.model_urls), published_model_urls | draft_model_urls
+        )
         self.assertEqual(res.deleted, 1)
         self.assertEqual(res.disassociated_tasks, 0)
         self.assertEqual(res.deleted_tasks, 1)
@@ -121,7 +133,9 @@ class TestTasksResetDelete(TestService):
         self, **kwargs
     ) -> Tuple[str, Tuple[Set[str], Set[str]], Set[str], Set[str]]:
         task = self.new_task(**kwargs)
-        (_, published_model_urls), (model, draft_model_urls) = self.create_task_models(task, **kwargs)
+        (_, published_model_urls), (model, draft_model_urls) = self.create_task_models(
+            task, **kwargs
+        )
         artifact_urls = self.send_artifacts(task)
         event_urls = self.send_debug_image_events(task)
         event_urls.update(self.send_plot_events(task))
@@ -172,7 +186,7 @@ class TestTasksResetDelete(TestService):
             ),
             self.create_event(
                 model, "plot", 0, plot_str=f'{{"source": "{url2}"}}', model_event=True
-            )
+            ),
         ]
         self.send_batch(events)
         return {url1, url2}
@@ -181,7 +195,10 @@ class TestTasksResetDelete(TestService):
         url_pattern = "url_{num}.txt"
         events = [
             self.create_event(
-                task, "training_debug_image", iteration, url=url_pattern.format(num=iteration)
+                task,
+                "training_debug_image",
+                iteration,
+                url=url_pattern.format(num=iteration),
             )
             for iteration in range(5)
         ]