diff --git a/plugins/azure/fix_plugin_azure/resource/base.py b/plugins/azure/fix_plugin_azure/resource/base.py
index e3c8eaa1a..e3d7fdf37 100644
--- a/plugins/azure/fix_plugin_azure/resource/base.py
+++ b/plugins/azure/fix_plugin_azure/resource/base.py
@@ -1026,8 +1026,9 @@ class AzureMetricQuery:
     metric_id: str
     aggregation: Tuple[str, ...]
     normalization: MetricNormalization
-    custom_period: Optional[timedelta] = None
-    custom_start_time: Optional[datetime] = None
+    # Optional `start_time` and `period` override defaults for query timespan and interval.
+    period: Optional[timedelta] = None
+    start_time: Optional[datetime] = None
     unit: str = "Count"
 
     @staticmethod
@@ -1041,8 +1042,8 @@ def create(
         normalization: MetricNormalization,
         aggregation: Tuple[str, ...],
         unit: str = "Count",
-        custom_start_time: Optional[datetime] = None,
-        custom_period: Optional[timedelta] = None,
+        start_time: Optional[datetime] = None,
+        period: Optional[timedelta] = None,
         metric_id: Optional[str] = None,
     ) -> "AzureMetricQuery":
         metric_id = f"{instance_id}/providers/Microsoft.Insights/metrics/{metric_name}"
@@ -1057,8 +1058,8 @@ def create(
             ref_id=ref_id,
             unit=unit,
             normalization=normalization,
-            custom_period=custom_period,
-            custom_start_time=custom_start_time,
+            period=period,
+            start_time=start_time,
         )
 
 
diff --git a/plugins/azure/fix_plugin_azure/resource/metrics.py b/plugins/azure/fix_plugin_azure/resource/metrics.py
index f879c0c31..d91221d7a 100644
--- a/plugins/azure/fix_plugin_azure/resource/metrics.py
+++ b/plugins/azure/fix_plugin_azure/resource/metrics.py
@@ -220,8 +220,8 @@ def _query_for_single(
             # Retrieve metric data from the API
             aggregation = ",".join(query.aggregation)
             # Define the timespan and interval for the query
-            timespan = f"{utc_str(query.custom_start_time or start_time)}/{utc_str(end_time)}"
-            interval = AzureMetricData.compute_interval(query.custom_period or builder.metrics_delta)
+            timespan = f"{utc_str(query.start_time or start_time)}/{utc_str(end_time)}"
+            interval = AzureMetricData.compute_interval(query.period or builder.metrics_delta)
             part = builder.client.list(
                 local_api_spec,
                 metricnames=query.metric_name,
diff --git a/plugins/azure/fix_plugin_azure/resource/storage.py b/plugins/azure/fix_plugin_azure/resource/storage.py
index f6c085c7a..ae19c8fa0 100644
--- a/plugins/azure/fix_plugin_azure/resource/storage.py
+++ b/plugins/azure/fix_plugin_azure/resource/storage.py
@@ -948,7 +948,7 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
         start = builder.metrics_start
         now = builder.created_at
         delta = builder.metrics_delta
-        # # Minimum interval and time range for storage metrics is 1H
+        # Minimum interval and time range for storage metrics is 1H
         if delta.total_seconds() < 3600:
             delta = timedelta(hours=1)
             start = now - delta
@@ -968,8 +968,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Bytes",
                 normalization=NormalizerFactory.bytes,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
         queries.append(
@@ -982,8 +982,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Bytes",
                 normalization=NormalizerFactory.bytes,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
         queries.append(
@@ -996,8 +996,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Count",
                 normalization=NormalizerFactory.count,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
         queries.append(
@@ -1010,8 +1010,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Bytes",
                 normalization=NormalizerFactory.bytes,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
         queries.append(
@@ -1024,8 +1024,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Count",
                 normalization=NormalizerFactory.count,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
         queries.append(
@@ -1038,8 +1038,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Bytes",
                 normalization=NormalizerFactory.bytes,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
         queries.append(
@@ -1052,8 +1052,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Count",
                 normalization=NormalizerFactory.count,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
         queries.append(
@@ -1066,8 +1066,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Bytes",
                 normalization=NormalizerFactory.bytes,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
         queries.append(
@@ -1080,8 +1080,8 @@ def collect_usage_metrics(self, builder: GraphBuilder) -> List[AzureMetricQuery]
                 ref_id=account_id,
                 unit="Count",
                 normalization=NormalizerFactory.count,
-                custom_period=delta,
-                custom_start_time=start,
+                period=delta,
+                start_time=start,
             )
         )
 
diff --git a/plugins/azure/test/metric_test.py b/plugins/azure/test/metric_test.py
index 0c04ae331..313a562da 100644
--- a/plugins/azure/test/metric_test.py
+++ b/plugins/azure/test/metric_test.py
@@ -18,7 +18,7 @@ def test_metric(builder: GraphBuilder) -> None:
         metric_namespace="Microsoft.Compute/virtualMachines",
         metric_normalization_name=MetricName.DiskWrite,
         normalization=NormalizerFactory.iops,
-        custom_period=delta,
+        period=delta,
         instance_id=resource_id,
         ref_id=resource_id,
         aggregation=("average", "minimum", "maximum"),