diff --git a/src/aind_data_transfer_service/__init__.py b/src/aind_data_transfer_service/__init__.py
index 0892676..d41314b 100644
--- a/src/aind_data_transfer_service/__init__.py
+++ b/src/aind_data_transfer_service/__init__.py
@@ -1,2 +1,9 @@
 """Init package"""
+import os
+
 __version__ = "0.8.4"
+
+# Global constants
+OPEN_DATA_BUCKET_NAME = os.getenv("OPEN_DATA_BUCKET_NAME", "open")
+PRIVATE_BUCKET_NAME = os.getenv("PRIVATE_BUCKET_NAME", "private")
+SCRATCH_BUCKET_NAME = os.getenv("SCRATCH_BUCKET_NAME", "scratch")
diff --git a/src/aind_data_transfer_service/configs/job_configs.py b/src/aind_data_transfer_service/configs/job_configs.py
index 776ed5e..8a5b6e7 100644
--- a/src/aind_data_transfer_service/configs/job_configs.py
+++ b/src/aind_data_transfer_service/configs/job_configs.py
@@ -1,5 +1,6 @@
 """This module adds classes to handle resolving common endpoints used in the
 data transfer jobs."""
+import os
 import re
 from datetime import datetime
 from pathlib import PurePosixPath
@@ -19,6 +20,12 @@
 )
 from pydantic_settings import BaseSettings
 
+from aind_data_transfer_service import (
+    OPEN_DATA_BUCKET_NAME,
+    PRIVATE_BUCKET_NAME,
+    SCRATCH_BUCKET_NAME,
+)
+
 
 class ModalityConfigs(BaseSettings):
     """Class to contain configs for each modality type"""
@@ -125,10 +132,11 @@ class BasicUploadJobConfigs(BaseSettings):
 
     aws_param_store_name: Optional[str] = Field(None)
 
-    s3_bucket: str = Field(
-        ...,
+    s3_bucket: Optional[str] = Field(
+        None,
         description="Bucket where data will be uploaded",
         title="S3 Bucket",
+        validate_default=True,
     )
     platform: Platform.ONE_OF = Field(
         ..., description="Platform", title="Platform"
@@ -208,6 +216,19 @@ def s3_prefix(self):
             creation_datetime=self.acq_datetime,
         )
 
+    @field_validator("s3_bucket", mode="before")
+    def map_bucket(cls, bucket: Optional[str]) -> Optional[str]:
+        """We're adding a policy that data uploaded through the service can
+        only land in a handful of buckets. As default, things will be
+        stored in the private bucket"""
+        if bucket is not None and bucket in [
+            OPEN_DATA_BUCKET_NAME,
+            SCRATCH_BUCKET_NAME,
+        ]:
+            return bucket
+        else:
+            return PRIVATE_BUCKET_NAME
+
     @field_validator("platform", mode="before")
     def parse_platform_string(
         cls, input_platform: Union[str, dict, Platform]
diff --git a/src/aind_data_transfer_service/configs/job_upload_template.py b/src/aind_data_transfer_service/configs/job_upload_template.py
index fc53915..867721b 100644
--- a/src/aind_data_transfer_service/configs/job_upload_template.py
+++ b/src/aind_data_transfer_service/configs/job_upload_template.py
@@ -18,7 +18,6 @@ class JobUploadTemplate:
         "platform",
         "acq_datetime",
         "subject_id",
-        "s3_bucket",
         "modality0",
         "modality0.source",
         "modality1",
@@ -29,7 +28,6 @@ class JobUploadTemplate:
             Platform.BEHAVIOR.abbreviation,
             datetime.datetime(2023, 10, 4, 4, 0, 0),
             "123456",
-            "aind-behavior-data",
             Modality.BEHAVIOR_VIDEOS.abbreviation,
             "/allen/aind/stage/fake/dir",
             Modality.BEHAVIOR.abbreviation,
@@ -39,7 +37,6 @@ class JobUploadTemplate:
             Platform.SMARTSPIM.abbreviation,
             datetime.datetime(2023, 3, 4, 16, 30, 0),
             "654321",
-            "aind-open-data",
             Modality.SPIM.abbreviation,
             "/allen/aind/stage/fake/dir",
         ],
@@ -47,7 +44,6 @@ class JobUploadTemplate:
             Platform.ECEPHYS.abbreviation,
             datetime.datetime(2023, 1, 30, 19, 1, 0),
             "654321",
-            "aind-ephys-data",
             Modality.ECEPHYS.abbreviation,
             "/allen/aind/stage/fake/dir",
             Modality.BEHAVIOR_VIDEOS.abbreviation,
@@ -65,16 +61,6 @@ class JobUploadTemplate:
             "options": [m().abbreviation for m in Modality._ALL],
             "ranges": ["E2:E20", "G2:G20"],
         },
-        {
-            "name": "s3_bucket",
-            "options": [
-                "aind-ephys-data",
-                "aind-ophys-data",
-                "aind-behavior-data",
-                "aind-private-data",
-            ],
-            "ranges": ["D2:D20"],
-        },
     ]
 
     @staticmethod
@@ -104,7 +90,7 @@ def create_job_template():
             worksheet.add_data_validation(dv)
         # formatting
         bold = Font(bold=True)
-        for header in worksheet["A1:H1"]:
+        for header in worksheet["A1:G1"]:
             for cell in header:
                 cell.font = bold
                 worksheet.column_dimensions[
diff --git a/src/aind_data_transfer_service/server.py b/src/aind_data_transfer_service/server.py
index 4489cff..8452e26 100644
--- a/src/aind_data_transfer_service/server.py
+++ b/src/aind_data_transfer_service/server.py
@@ -15,6 +15,7 @@
 from starlette.applications import Starlette
 from starlette.routing import Route
 
+from aind_data_transfer_service import OPEN_DATA_BUCKET_NAME
 from aind_data_transfer_service.configs.job_configs import (
     BasicUploadJobConfigs,
     HpcJobConfigs,
@@ -48,8 +49,6 @@
 # OPEN_DATA_AWS_SECRET_ACCESS_KEY
 # OPEN_DATA_AWS_ACCESS_KEY_ID
 
-OPEN_DATA_BUCKET_NAME = os.getenv("OPEN_DATA_BUCKET_NAME", "aind-open-data")
-
 
 async def validate_csv(request: Request):
     """Validate a csv or xlsx file. Return parsed contents as json."""
diff --git a/tests/resources/job_upload_template.xlsx b/tests/resources/job_upload_template.xlsx
index 14d0f79..227cf26 100644
Binary files a/tests/resources/job_upload_template.xlsx and b/tests/resources/job_upload_template.xlsx differ
diff --git a/tests/resources/sample.csv b/tests/resources/sample.csv
index beecb88..370494a 100644
--- a/tests/resources/sample.csv
+++ b/tests/resources/sample.csv
@@ -1,4 +1,4 @@
 modality0, modality0.source, modality1, modality1.source, s3-bucket, subject-id, platform, acq-datetime
 ECEPHYS, dir/data_set_1, ,, some_bucket, 123454, ecephys, 2020-10-10 14:10:10
-BEHAVIOR_VIDEOS, dir/data_set_2, MRI, dir/data_set_3, some_bucket2, 123456, BEHAVIOR, 10/13/2020 1:10:10 PM
-BEHAVIOR_VIDEOS, dir/data_set_2, BEHAVIOR_VIDEOS, dir/data_set_3, some_bucket2, 123456, BEHAVIOR, 10/13/2020 1:10:10 PM
+BEHAVIOR_VIDEOS, dir/data_set_2, MRI, dir/data_set_3, open, 123456, BEHAVIOR, 10/13/2020 1:10:10 PM
+BEHAVIOR_VIDEOS, dir/data_set_2, BEHAVIOR_VIDEOS, dir/data_set_3, scratch, 123456, BEHAVIOR, 10/13/2020 1:10:10 PM
diff --git a/tests/resources/sample.xlsx b/tests/resources/sample.xlsx
index 76b2faf..52a0fa1 100644
Binary files a/tests/resources/sample.xlsx and b/tests/resources/sample.xlsx differ
diff --git a/tests/resources/sample_alt_modality_case.csv b/tests/resources/sample_alt_modality_case.csv
index b23dcad..1ce7623 100644
--- a/tests/resources/sample_alt_modality_case.csv
+++ b/tests/resources/sample_alt_modality_case.csv
@@ -1,4 +1,4 @@
 modality0, modality0.source, modality1, modality1.source, s3-bucket, subject-id, platform, acq-datetime
 ecephys, dir/data_set_1, ,, some_bucket, 123454, ecephys, 2020-10-10 14:10:10
-behavior-videos, dir/data_set_2, MRI, dir/data_set_3, some_bucket2, 123456, BEHAVIOR, 10/13/2020 1:10:10 PM
-behavior-videos, dir/data_set_2, BEHAVIOR_VIDEOS, dir/data_set_3, some_bucket2, 123456, BEHAVIOR, 10/13/2020 1:10:10 PM
+behavior-videos, dir/data_set_2, MRI, dir/data_set_3, open, 123456, BEHAVIOR, 10/13/2020 1:10:10 PM
+behavior-videos, dir/data_set_2, BEHAVIOR_VIDEOS, dir/data_set_3, scratch, 123456, BEHAVIOR, 10/13/2020 1:10:10 PM
diff --git a/tests/test_configs.py b/tests/test_configs.py
index deda2c0..5767c31 100644
--- a/tests/test_configs.py
+++ b/tests/test_configs.py
@@ -5,6 +5,7 @@
 import unittest
 from datetime import datetime
 from pathlib import Path, PurePosixPath
+from unittest.mock import patch
 
 from aind_data_schema.core.processing import ProcessName
 from aind_data_schema.models.modalities import Modality
@@ -27,7 +28,7 @@ class TestJobConfigs(unittest.TestCase):
     expected_job_configs = [
         BasicUploadJobConfigs(
             aws_param_store_name="/some/param/store",
-            s3_bucket="some_bucket",
+            s3_bucket="private",
             platform=Platform.ECEPHYS,
             modalities=[
                 ModalityConfigs(
@@ -50,7 +51,7 @@ class TestJobConfigs(unittest.TestCase):
         ),
         BasicUploadJobConfigs(
             aws_param_store_name="/some/param/store",
-            s3_bucket="some_bucket2",
+            s3_bucket="open",
             platform=Platform.BEHAVIOR,
             modalities=[
                 ModalityConfigs(
@@ -80,7 +81,7 @@ class TestJobConfigs(unittest.TestCase):
         ),
         BasicUploadJobConfigs(
             aws_param_store_name="/some/param/store",
-            s3_bucket="some_bucket2",
+            s3_bucket="scratch",
             platform=Platform.BEHAVIOR,
             modalities=[
                 ModalityConfigs(
@@ -308,7 +309,7 @@ def test_from_job_and_server_configs(self):
                 " python -m aind_data_transfer.jobs.basic_job"
                 " --json-args ' "
                 '{"aws_param_store_name":"/some/param/store",'
-                '"s3_bucket":"some_bucket",'
+                '"s3_bucket":"private",'
                 '"platform":{"name":"Electrophysiology platform",'
                 '"abbreviation":"ecephys"},'
                 '"modalities":[{"modality":'
diff --git a/tests/test_server.py b/tests/test_server.py
index 8cd7bde..d2a774e 100644
--- a/tests/test_server.py
+++ b/tests/test_server.py
@@ -268,7 +268,7 @@ def test_submit_hpc_jobs(
                 {
                     "hpc_settings": '{"qos":"production", "name": "job1"}',
                     "upload_job_settings": (
-                        '{"s3_bucket": "some_bucket2", '
+                        '{"s3_bucket": "private", '
                         '"platform": {"name": "Behavior platform", '
                         '"abbreviation": "behavior"}, '
                         '"modalities": ['
@@ -334,7 +334,7 @@ def test_submit_hpc_jobs_open_data(
                 {
                     "hpc_settings": '{"qos":"production", "name": "job1"}',
                     "upload_job_settings": (
-                        '{"s3_bucket": "aind-open-data", '
+                        '{"s3_bucket": "open", '
                         '"platform": {"name": "Behavior platform", '
                         '"abbreviation": "behavior"}, '
                         '"modalities": ['