diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders/parallel.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders/parallel.py
index 74ae6e9ae2cc..95b15de57f16 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders/parallel.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders/parallel.py
@@ -9,6 +9,7 @@
 import logging
 import os
 import re
+from enum import Enum
 from typing import Any, Dict, List, Optional, Tuple, Type, Union, cast
 
 from marshmallow import INCLUDE, Schema
@@ -23,6 +24,7 @@
 )
 from azure.ai.ml.entities._job.job import Job
 from azure.ai.ml.entities._job.parallel.run_function import RunFunction
+from azure.ai.ml.entities._job.pipeline._io import NodeOutput
 
 from ..._schema import PathAwareSchema
 from ..._utils.utils import is_data_binding_expression
@@ -31,7 +33,7 @@
 from .._component.component import Component
 from .._component.flow import FlowComponent
 from .._component.parallel_component import ParallelComponent
-from .._inputs_outputs import Output
+from .._inputs_outputs import Input, Output
 from .._job.job_resource_configuration import JobResourceConfiguration
 from .._job.parallel.parallel_job import ParallelJob
 from .._job.parallel.parallel_task import ParallelTask
@@ -108,7 +110,7 @@ def __init__(
         *,
         component: Union[ParallelComponent, str],
         compute: Optional[str] = None,
-        inputs: Optional[Dict] = None,
+        inputs: Optional[Dict[str, Union[NodeOutput, Input, str, bool, int, float, Enum]]] = None,
         outputs: Optional[Dict[str, Union[str, Output, "Output"]]] = None,
         retry_settings: Optional[Union[RetrySettings, Dict[str, str]]] = None,
         logging_level: Optional[str] = None,
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders/sweep.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders/sweep.py
index e79d95e2f2ca..ec1edc2d6a65 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders/sweep.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_builders/sweep.py
@@ -427,9 +427,9 @@ def __setattr__(self, key: Any, value: Any) -> None:
             # only one of slack_amount and slack_factor can be specified but default value is 0.0.
             # Need to keep track of which one is null.
             if self.early_termination.slack_amount == 0.0:
-                self.early_termination.slack_amount = None
+                self.early_termination.slack_amount = None  # type: ignore[assignment]
             if self.early_termination.slack_factor == 0.0:
-                self.early_termination.slack_factor = None
+                self.early_termination.slack_factor = None  # type: ignore[assignment]
 
     @property
     def early_termination(self) -> Optional[Union[str, EarlyTerminationPolicy]]:
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_datastore/azure_storage.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_datastore/azure_storage.py
index 7eed6e3e3f80..3ad8eb4a8ad5 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_datastore/azure_storage.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_datastore/azure_storage.py
@@ -45,7 +45,8 @@ class AzureFileDatastore(Datastore):
     :param properties: The asset property dictionary.
     :type properties: dict[str, str]
     :param credentials: Credentials to use for Azure ML workspace to connect to the storage.
-    :type credentials: Union[AccountKeySection, SasSection]
+    :type credentials: Union[~azure.ai.ml.entities.AccountKeyConfiguration,
+        ~azure.ai.ml.entities.SasTokenConfiguration]
     :param kwargs: A dictionary of additional configuration parameters.
     :type kwargs: dict
     """
@@ -61,7 +62,7 @@ def __init__(
         endpoint: str = _get_storage_endpoint_from_metadata(),
         protocol: str = HTTPS,
         properties: Optional[Dict] = None,
-        credentials: Any,
+        credentials: Union[AccountKeyConfiguration, SasTokenConfiguration],
         **kwargs: Any
     ):
         kwargs[TYPE] = DatastoreType.AZURE_FILE
@@ -97,7 +98,7 @@ def _from_rest_object(cls, datastore_resource: DatastoreData) -> "AzureFileDatas
             name=datastore_resource.name,
             id=datastore_resource.id,
             account_name=properties.account_name,
-            credentials=from_rest_datastore_credentials(properties.credentials),
+            credentials=from_rest_datastore_credentials(properties.credentials),  # type: ignore[arg-type]
             endpoint=properties.endpoint,
             protocol=properties.protocol,
             file_share_name=properties.file_share_name,
@@ -260,7 +261,7 @@ def __init__(
         endpoint: str = _get_storage_endpoint_from_metadata(),
         protocol: str = HTTPS,
         properties: Optional[Dict] = None,
-        credentials: Any = None,
+        credentials: Optional[Union[AccountKeyConfiguration, SasTokenConfiguration]] = None,
         **kwargs: Any
     ):
         kwargs[TYPE] = DatastoreType.AZURE_DATA_LAKE_GEN2
@@ -299,7 +300,7 @@ def _from_rest_object(cls, datastore_resource: DatastoreData) -> "AzureDataLakeG
             name=datastore_resource.name,
             id=datastore_resource.id,
             account_name=properties.account_name,
-            credentials=from_rest_datastore_credentials(properties.credentials),
+            credentials=from_rest_datastore_credentials(properties.credentials),  # type: ignore[arg-type]
             endpoint=properties.endpoint,
             protocol=properties.protocol,
             filesystem=properties.filesystem,
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/external_data.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/external_data.py
index ac6c6608238f..a031d065ad27 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/external_data.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/external_data.py
@@ -67,7 +67,7 @@ def __init__(
         query: Optional[str] = None,
         table_name: Optional[str] = None,
         stored_procedure: Optional[str] = None,
-        stored_procedure_params: Optional[List] = None,
+        stored_procedure_params: Optional[List[Dict]] = None,
         connection: Optional[str] = None,
     ) -> None:
         # As an annotation, it is not allowed to initialize the name.
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/input.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/input.py
index 96a2fe233512..b5e11a188b13 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/input.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/input.py
@@ -85,19 +85,6 @@ def __init__(
     ) -> None:
         """"""
 
-    @overload
-    def __init__(
-        self,
-        *,
-        type: Literal["uri_folder"] = "uri_folder",
-        path: Optional[str] = None,
-        mode: Optional[str] = None,
-        optional: Optional[bool] = None,
-        description: Optional[str] = None,
-        **kwargs: Any,
-    ) -> None:
-        """"""
-
     @overload
     def __init__(
         self,
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/output.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/output.py
index bc245126d20a..573931a53243 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/output.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_inputs_outputs/output.py
@@ -34,14 +34,42 @@ def __init__(
 
     @overload
     def __init__(
+        self,
+        type: Literal["uri_file"] = "uri_file",
+        path: Optional[str] = None,
+        mode: Optional[str] = None,
+        description: Optional[str] = None,
+    ):
+        """Define a URI file output.
+
+        :keyword type: The type of the data output. Can only be set to 'uri_file'.
+        :paramtype type: str
+        :keyword path: The remote path where the output should be stored.
+        :paramtype path: str
+        :keyword mode: The access mode of the data output. Accepted values are
+            * 'rw_mount': Read-write mount the data,
+            * 'upload': Upload the data from the compute target,
+            * 'direct': Pass in the URI as a string
+        :paramtype mode: str
+        :keyword description: The description of the output.
+        :paramtype description: str
+        :keyword name: The name to be used to register the output as a Data or Model asset. A name can be set without
+            setting a version.
+        :paramtype name: str
+        :keyword version: The version used to register the output as a Data or Model asset. A version can be set only
+            when name is set.
+        :paramtype version: str
+        """
+
+    def __init__(  # type: ignore[misc]
         self,
         *,
-        type: Literal["uri_folder"] = "uri_folder",
+        type: str = AssetTypes.URI_FOLDER,
         path: Optional[str] = None,
         mode: Optional[str] = None,
         description: Optional[str] = None,
+        **kwargs: Any,
     ) -> None:
-        # pylint: disable=line-too-long
         """Define an output.
 
         :keyword type: The type of the data output. Accepted values are 'uri_folder', 'uri_file', 'mltable',
@@ -68,9 +96,8 @@ def __init__(
         :paramtype early_available: bool
         :keyword intellectual_property: Intellectual property associated with the output.
             It can be an instance of `IntellectualProperty` or a dictionary that will be used to create an instance.
-        :paramtype intellectual_property: Union[~azure.ai.ml.entities._assets.intellectual_property.IntellectualProperty,
-
-            dict]
+        :paramtype intellectual_property: Union[
+            ~azure.ai.ml.entities._assets.intellectual_property.IntellectualProperty, dict]
 
         .. admonition:: Example:
 
@@ -81,46 +108,6 @@ def __init__(
                 :dedent: 8
                 :caption: Creating a CommandJob with a folder output.
         """
-
-    @overload
-    def __init__(
-        self,
-        *,
-        type: Literal["uri_file"] = "uri_file",
-        path: Optional[str] = None,
-        mode: Optional[str] = None,
-        description: Optional[str] = None,
-    ):
-        """Define a URI file output.
-
-        :keyword type: The type of the data output. Can only be set to 'uri_file'.
-        :paramtype type: str
-        :keyword path: The remote path where the output should be stored.
-        :paramtype path: str
-        :keyword mode: The access mode of the data output. Accepted values are
-            * 'rw_mount': Read-write mount the data,
-            * 'upload': Upload the data from the compute target,
-            * 'direct': Pass in the URI as a string
-        :paramtype mode: str
-        :keyword description: The description of the output.
-        :paramtype description: str
-        :keyword name: The name to be used to register the output as a Data or Model asset. A name can be set without
-            setting a version.
-        :paramtype name: str
-        :keyword version: The version used to register the output as a Data or Model asset. A version can be set only
-            when name is set.
-        :paramtype version: str
-        """
-
-    def __init__(
-        self,
-        *,
-        type: str = AssetTypes.URI_FOLDER,
-        path: Optional[str] = None,
-        mode: Optional[str] = None,
-        description: Optional[str] = None,
-        **kwargs: Any,
-    ) -> None:
         super(Output, self).__init__(type=type)
         # As an annotation, it is not allowed to initialize the _port_name.
         self._port_name = None
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/job.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/job.py
index 1e3cd393a892..d756d9a26964 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/job.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/job.py
@@ -141,7 +141,7 @@ def status(self) -> Optional[str]:
         return self._status
 
     @property
-    def log_files(self) -> Optional[Dict]:
+    def log_files(self) -> Optional[Dict[str, str]]:
         """Job output files.
 
         :return: The dictionary of log names and URLs.
@@ -208,10 +208,10 @@ def _resolve_cls_and_type(cls, data: Dict, params_override: Optional[List[Dict]]
         from azure.ai.ml.entities._builders.command import Command
         from azure.ai.ml.entities._builders.spark import Spark
         from azure.ai.ml.entities._job.automl.automl_job import AutoMLJob
+        from azure.ai.ml.entities._job.finetuning.finetuning_job import FineTuningJob
         from azure.ai.ml.entities._job.import_job import ImportJob
         from azure.ai.ml.entities._job.pipeline.pipeline_job import PipelineJob
         from azure.ai.ml.entities._job.sweep.sweep_job import SweepJob
-        from azure.ai.ml.entities._job.finetuning.finetuning_job import FineTuningJob
 
         job_type: Optional[Type["Job"]] = None
         type_in_override = find_type_in_override(params_override)
@@ -293,9 +293,9 @@ def _from_rest_object(  # pylint: disable=too-many-return-statements
         from azure.ai.ml.entities._builders.spark import Spark
         from azure.ai.ml.entities._job.automl.automl_job import AutoMLJob
         from azure.ai.ml.entities._job.base_job import _BaseJob
+        from azure.ai.ml.entities._job.finetuning.finetuning_job import FineTuningJob
         from azure.ai.ml.entities._job.import_job import ImportJob
         from azure.ai.ml.entities._job.sweep.sweep_job import SweepJob
-        from azure.ai.ml.entities._job.finetuning.finetuning_job import FineTuningJob
 
         try:
             if isinstance(obj, Run):
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/parallel/parallel_job.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/parallel/parallel_job.py
index 9310f65ab0db..b1d2b74f6ff1 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/parallel/parallel_job.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/parallel/parallel_job.py
@@ -200,7 +200,7 @@ def _to_node(self, context: Optional[Dict] = None, **kwargs: Any) -> "Parallel":
             component=component,
             compute=self.compute,
             # Need to supply the inputs with double curly.
-            inputs=self.inputs,
+            inputs=self.inputs,  # type: ignore[arg-type]
             outputs=self.outputs,  # type: ignore[arg-type]
             mini_batch_size=self.mini_batch_size,
             partition_keys=self.partition_keys,
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/sweep/early_termination_policy.py b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/sweep/early_termination_policy.py
index 08e1274e573b..b1b928fcc4a4 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/sweep/early_termination_policy.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/entities/_job/sweep/early_termination_policy.py
@@ -77,8 +77,8 @@ def __init__(
         *,
         delay_evaluation: int = 0,
         evaluation_interval: int = 0,
-        slack_amount: Optional[float] = 0,
-        slack_factor: Optional[float] = 0,
+        slack_amount: float = 0,
+        slack_factor: float = 0,
     ) -> None:
         super().__init__(delay_evaluation=delay_evaluation, evaluation_interval=evaluation_interval)
         self.type = EarlyTerminationPolicyType.BANDIT.lower()
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_set_operations.py b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_set_operations.py
index 98cfc0a94951..4703ff800c10 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_set_operations.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_set_operations.py
@@ -125,7 +125,7 @@ def _get(self, name: str, version: Optional[str] = None, **kwargs: Dict) -> Feat
 
     @distributed_trace
     @monitor_with_activity(ops_logger, "FeatureSet.Get", ActivityType.PUBLICAPI)
-    def get(self, name: str, version: str, **kwargs: Dict) -> Optional[FeatureSet]:  # type: ignore
+    def get(self, name: str, version: str, **kwargs: Dict) -> FeatureSet:  # type: ignore
         """Get the specified FeatureSet asset.
 
         :param name: Name of FeatureSet asset.
@@ -134,6 +134,8 @@ def get(self, name: str, version: str, **kwargs: Dict) -> Optional[FeatureSet]:
         :type version: str
         :raises ~azure.ai.ml.exceptions.ValidationException: Raised if FeatureSet cannot be successfully
             identified and retrieved. Details will be provided in the error message.
+        :raises ~azure.core.exceptions.HttpResponseError: Raised if the corresponding name and version cannot be
+            retrieved from the service.
         :return: FeatureSet asset object.
         :rtype: ~azure.ai.ml.entities.FeatureSet
         """
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_store_operations.py b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_store_operations.py
index 571f5d83c8e1..fdadea599e2a 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_store_operations.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_feature_store_operations.py
@@ -118,6 +118,8 @@ def get(self, name: str, **kwargs: Any) -> FeatureStore:
 
         :param name: Name of the feature store.
         :type name: str
+        :raises ~azure.core.exceptions.HttpResponseError: Raised if the corresponding name and version cannot be
+            retrieved from the service.
         :return: The feature store with the provided name.
         :rtype: FeatureStore
         """
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_job_operations.py b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_job_operations.py
index 8a3e9e34c810..f28a5617f5d3 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_job_operations.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_job_operations.py
@@ -365,7 +365,7 @@ def get(self, name: str) -> Job:
 
     @distributed_trace
     @monitor_with_telemetry_mixin(ops_logger, "Job.ShowServices", ActivityType.PUBLICAPI)
-    def show_services(self, name: str, node_index: int = 0) -> Optional[Dict]:
+    def show_services(self, name: str, node_index: int = 0) -> Optional[Dict[str, ServiceInstance]]:
         """Gets services associated with a job's node.
 
         :param name: The name of the job.
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_registry_operations.py b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_registry_operations.py
index c35b723883e0..2a380c39f820 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_registry_operations.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_registry_operations.py
@@ -72,13 +72,15 @@ def list(self, *, scope: str = Scope.RESOURCE_GROUP) -> Iterable[Registry]:
         )
 
     @monitor_with_activity(ops_logger, "Registry.Get", ActivityType.PUBLICAPI)
-    def get(self, name: Optional[str] = None) -> Optional[Registry]:
+    def get(self, name: Optional[str] = None) -> Registry:
         """Get a registry by name.
 
         :param name: Name of the registry.
         :type name: str
         :raises ~azure.ai.ml.exceptions.ValidationException: Raised if Registry name cannot be
             successfully validated. Details will be provided in the error message.
+        :raises ~azure.core.exceptions.HttpResponseError: Raised if the corresponding name and version cannot be
+            retrieved from the service.
         :return: The registry with the provided name.
         :rtype: ~azure.ai.ml.entities.Registry
         """
@@ -86,7 +88,7 @@ def get(self, name: Optional[str] = None) -> Optional[Registry]:
         registry_name = self._check_registry_name(name)
         resource_group = self._resource_group_name
         obj = self._operation.get(resource_group, registry_name)
-        return Registry._from_rest_object(obj)
+        return Registry._from_rest_object(obj)  # type: ignore[return-value]
 
     def _check_registry_name(self, name: Optional[str]) -> str:
         registry_name = name or self._default_registry_name
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_workspace_connections_operations.py b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_workspace_connections_operations.py
index 41e6049b6206..82e7e24d4b7b 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_workspace_connections_operations.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_workspace_connections_operations.py
@@ -47,11 +47,13 @@ def __init__(
         self._init_kwargs = kwargs
 
     @monitor_with_activity(ops_logger, "WorkspaceConnections.Get", ActivityType.PUBLICAPI)
-    def get(self, name: str, **kwargs: Dict) -> Optional[WorkspaceConnection]:
+    def get(self, name: str, **kwargs: Dict) -> WorkspaceConnection:
         """Get a workspace connection by name.
 
         :param name: Name of the workspace connection.
         :type name: str
+        :raises ~azure.core.exceptions.HttpResponseError: Raised if the corresponding name and version cannot be
+            retrieved from the service.
         :return: The workspace connection with the provided name.
         :rtype: ~azure.ai.ml.entities.WorkspaceConnection
 
@@ -72,7 +74,7 @@ def get(self, name: str, **kwargs: Dict) -> Optional[WorkspaceConnection]:
             **kwargs,
         )
 
-        return WorkspaceConnection._from_rest_object(rest_obj=obj)
+        return WorkspaceConnection._from_rest_object(rest_obj=obj)  # type: ignore[return-value]
 
     @monitor_with_activity(ops_logger, "WorkspaceConnections.CreateOrUpdate", ActivityType.PUBLICAPI)
     def create_or_update(
diff --git a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_workspace_hub_operation.py b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_workspace_hub_operation.py
index db488b876961..0786a474c44b 100644
--- a/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_workspace_hub_operation.py
+++ b/sdk/ml/azure-ai-ml/azure/ai/ml/operations/_workspace_hub_operation.py
@@ -92,11 +92,13 @@ def list(self, *, scope: str = Scope.RESOURCE_GROUP) -> Iterable[WorkspaceHub]:
     @distributed_trace
     @monitor_with_activity(ops_logger, "WorkspaceHub.Get", ActivityType.PUBLICAPI)
     # pylint: disable=arguments-renamed, arguments-differ
-    def get(self, name: str, **kwargs: Dict) -> Optional[WorkspaceHub]:
+    def get(self, name: str, **kwargs: Dict) -> WorkspaceHub:
         """Get a Workspace WorkspaceHub by name.
 
         :param name: Name of the WorkspaceHub.
         :type name: str
+        :raises ~azure.core.exceptions.HttpResponseError: Raised if the corresponding name and version cannot be
+            retrieved from the service.
         :return: The WorkspaceHub with the provided name.
         :rtype: ~azure.ai.ml.entities.WorkspaceHub
 
@@ -116,7 +118,7 @@ def get(self, name: str, **kwargs: Dict) -> Optional[WorkspaceHub]:
         if rest_workspace_obj and rest_workspace_obj.kind and rest_workspace_obj.kind.lower() == WORKSPACE_HUB_KIND:
             workspace_hub = WorkspaceHub._from_rest_object(rest_workspace_obj)
 
-        return workspace_hub
+        return workspace_hub  # type: ignore[return-value]
 
     @distributed_trace
     @monitor_with_activity(ops_logger, "WorkspaceHub.BeginCreate", ActivityType.PUBLICAPI)