diff --git a/.github/workflows/pr.yaml b/.github/workflows/pr.yaml
index bc237cc73b0..a57f579347b 100644
--- a/.github/workflows/pr.yaml
+++ b/.github/workflows/pr.yaml
@@ -14,29 +14,11 @@ jobs:
     needs:
       - changed-files
       - checks
-      - conda-cpp-build
-      - conda-cpp-checks
-      - conda-cpp-tests
-      - conda-python-build
-      - conda-python-cudf-tests
-      - conda-python-other-tests
-      - conda-java-tests
-      - static-configure
-      - conda-notebook-tests
-      - docs-build
       - wheel-build-libcudf
       - wheel-build-pylibcudf
       - wheel-build-cudf
-      - wheel-tests-cudf
       - wheel-build-cudf-polars
-      - wheel-tests-cudf-polars
-      - cudf-polars-polars-tests
       - wheel-build-dask-cudf
-      - wheel-tests-dask-cudf
-      - devcontainer
-      - unit-tests-cudf-pandas
-      - pandas-tests
-      - pandas-tests-diff
     secrets: inherit
     uses: rapidsai/shared-workflows/.github/workflows/pr-builder.yaml@branch-24.12
     if: always()
@@ -94,91 +76,6 @@ jobs:
     uses: rapidsai/shared-workflows/.github/workflows/checks.yaml@branch-24.12
     with:
       enable_check_generated_files: false
-  conda-cpp-build:
-    needs: checks
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-build.yaml@branch-24.12
-    with:
-      build_type: pull-request
-  conda-cpp-checks:
-    needs: conda-cpp-build
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-post-build-checks.yaml@branch-24.12
-    with:
-      build_type: pull-request
-      enable_check_symbols: true
-  conda-cpp-tests:
-    needs: [conda-cpp-build, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-cpp-tests.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_cpp
-    with:
-      build_type: pull-request
-  conda-python-build:
-    needs: conda-cpp-build
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-build.yaml@branch-24.12
-    with:
-      build_type: pull-request
-  conda-python-cudf-tests:
-    needs: [conda-python-build, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
-    with:
-      build_type: pull-request
-      script: "ci/test_python_cudf.sh"
-  conda-python-other-tests:
-    # Tests for dask_cudf, custreamz, cudf_kafka are separated for CI parallelism
-    needs: [conda-python-build, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/conda-python-tests.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
-    with:
-      build_type: pull-request
-      script: "ci/test_python_other.sh"
-  conda-java-tests:
-    needs: [conda-cpp-build, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_java
-    with:
-      build_type: pull-request
-      node_type: "gpu-v100-latest-1"
-      arch: "amd64"
-      container_image: "rapidsai/ci-conda:cuda12.5.1-ubuntu22.04-py3.11"
-      run_script: "ci/test_java.sh"
-  static-configure:
-    needs: checks
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@branch-24.12
-    with:
-      build_type: pull-request
-      # Use the wheel container so we can skip conda solves and since our
-      # primary static consumers (Spark) are not in conda anyway.
-      container_image: "rapidsai/ci-wheel:latest"
-      run_script: "ci/configure_cpp_static.sh"
-  conda-notebook-tests:
-    needs: [conda-python-build, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_notebooks
-    with:
-      build_type: pull-request
-      node_type: "gpu-v100-latest-1"
-      arch: "amd64"
-      container_image: "rapidsai/ci-conda:cuda12.5.1-ubuntu22.04-py3.11"
-      run_script: "ci/test_notebooks.sh"
-  docs-build:
-    needs: conda-python-build
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@branch-24.12
-    with:
-      build_type: pull-request
-      node_type: "gpu-v100-latest-1"
-      arch: "amd64"
-      container_image: "rapidsai/ci-conda:cuda12.5.1-ubuntu22.04-py3.11"
-      run_script: "ci/build_docs.sh"
   wheel-build-libcudf:
     needs: checks
     secrets: inherit
@@ -202,14 +99,6 @@ jobs:
     with:
       build_type: pull-request
       script: "ci/build_wheel_cudf.sh"
-  wheel-tests-cudf:
-    needs: [wheel-build-cudf, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
-    with:
-      build_type: pull-request
-      script: ci/test_wheel_cudf.sh
   wheel-build-cudf-polars:
     needs: wheel-build-pylibcudf
     secrets: inherit
@@ -219,29 +108,6 @@ jobs:
       matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
       build_type: pull-request
       script: "ci/build_wheel_cudf_polars.sh"
-  wheel-tests-cudf-polars:
-    needs: [wheel-build-cudf-polars, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
-    with:
-      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
-      matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
-      build_type: pull-request
-      # This always runs, but only fails if this PR touches code in
-      # pylibcudf or cudf_polars
-      script: "ci/test_wheel_cudf_polars.sh"
-  cudf-polars-polars-tests:
-    needs: wheel-build-cudf-polars
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
-    with:
-      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
-      matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
-      build_type: pull-request
-      # This always runs, but only fails if this PR touches code in
-      # pylibcudf or cudf_polars
-      script: "ci/test_cudf_polars_polars_tests.sh"
   wheel-build-dask-cudf:
     needs: wheel-build-cudf
     secrets: inherit
@@ -251,54 +117,3 @@ jobs:
       matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
       build_type: pull-request
       script: "ci/build_wheel_dask_cudf.sh"
-  wheel-tests-dask-cudf:
-    needs: [wheel-build-dask-cudf, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python
-    with:
-      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
-      matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
-      build_type: pull-request
-      script: ci/test_wheel_dask_cudf.sh
-  devcontainer:
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/build-in-devcontainer.yaml@branch-24.12
-    with:
-      arch: '["amd64"]'
-      cuda: '["12.5"]'
-      build_command: |
-        sccache -z;
-        build-all -DBUILD_BENCHMARKS=ON --verbose;
-        sccache -s;
-  unit-tests-cudf-pandas:
-    needs: [wheel-build-cudf, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python || fromJSON(needs.changed-files.outputs.changed_file_groups).test_cudf_pandas
-    with:
-      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
-      matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
-      build_type: pull-request
-      script: ci/cudf_pandas_scripts/run_tests.sh
-  pandas-tests:
-    # run the Pandas unit tests using PR branch
-    needs: [wheel-build-cudf, changed-files]
-    secrets: inherit
-    uses: rapidsai/shared-workflows/.github/workflows/wheels-test.yaml@branch-24.12
-    if: fromJSON(needs.changed-files.outputs.changed_file_groups).test_python || fromJSON(needs.changed-files.outputs.changed_file_groups).test_cudf_pandas
-    with:
-      # This selects "ARCH=amd64 + the latest supported Python + CUDA".
-      matrix_filter: map(select(.ARCH == "amd64")) | group_by(.CUDA_VER|split(".")|map(tonumber)|.[0]) | map(max_by([(.PY_VER|split(".")|map(tonumber)), (.CUDA_VER|split(".")|map(tonumber))]))
-      build_type: pull-request
-      script: ci/cudf_pandas_scripts/pandas-tests/run.sh pr
-      # Hide test failures because they exceed the GITHUB_STEP_SUMMARY output limit.
-      test_summary_show: "none"
-  pandas-tests-diff:
-    # diff the results of running the Pandas unit tests and publish a job summary
-    needs: pandas-tests
-    uses: rapidsai/shared-workflows/.github/workflows/custom-job.yaml@branch-24.12
-    with:
-        node_type: cpu4
-        build_type: pull-request
-        run_script: "ci/cudf_pandas_scripts/pandas-tests/diff.sh"
diff --git a/ci/build_wheel_cudf.sh b/ci/build_wheel_cudf.sh
index ae4eb0d5c66..32dd5a7fa62 100755
--- a/ci/build_wheel_cudf.sh
+++ b/ci/build_wheel_cudf.sh
@@ -27,4 +27,6 @@ python -m auditwheel repair \
     -w ${package_dir}/final_dist \
     ${package_dir}/dist/*
 
+./ci/validate_wheel.sh ${package_dir} final_dist
+
 RAPIDS_PY_WHEEL_NAME="cudf_${RAPIDS_PY_CUDA_SUFFIX}" rapids-upload-wheels-to-s3 python ${package_dir}/final_dist
diff --git a/ci/build_wheel_cudf_polars.sh b/ci/build_wheel_cudf_polars.sh
index 79853cdbdb2..38048125247 100755
--- a/ci/build_wheel_cudf_polars.sh
+++ b/ci/build_wheel_cudf_polars.sh
@@ -6,6 +6,7 @@ set -euo pipefail
 package_dir="python/cudf_polars"
 
 ./ci/build_wheel.sh cudf-polars ${package_dir}
+./ci/validate_wheel.sh ${package_dir} dist
 
 RAPIDS_PY_CUDA_SUFFIX="$(rapids-wheel-ctk-name-gen ${RAPIDS_CUDA_VERSION})"
 RAPIDS_PY_WHEEL_NAME="cudf_polars_${RAPIDS_PY_CUDA_SUFFIX}" RAPIDS_PY_WHEEL_PURE="1" rapids-upload-wheels-to-s3 python ${package_dir}/dist
diff --git a/ci/build_wheel_dask_cudf.sh b/ci/build_wheel_dask_cudf.sh
index 00c64afa2ef..b0ae2f23abc 100755
--- a/ci/build_wheel_dask_cudf.sh
+++ b/ci/build_wheel_dask_cudf.sh
@@ -6,6 +6,7 @@ set -euo pipefail
 package_dir="python/dask_cudf"
 
 ./ci/build_wheel.sh dask-cudf ${package_dir}
+./ci/validate_wheel.sh ${package_dir} dist
 
 RAPIDS_PY_CUDA_SUFFIX="$(rapids-wheel-ctk-name-gen ${RAPIDS_CUDA_VERSION})"
 RAPIDS_PY_WHEEL_NAME="dask_cudf_${RAPIDS_PY_CUDA_SUFFIX}" RAPIDS_PY_WHEEL_PURE="1" rapids-upload-wheels-to-s3 python ${package_dir}/dist
diff --git a/ci/build_wheel_libcudf.sh b/ci/build_wheel_libcudf.sh
index aabd3814a24..af49942c8cd 100755
--- a/ci/build_wheel_libcudf.sh
+++ b/ci/build_wheel_libcudf.sh
@@ -37,4 +37,6 @@ python -m auditwheel repair \
     -w ${package_dir}/final_dist \
     ${package_dir}/dist/*
 
+./ci/validate_wheel.sh ${package_dir} final_dist
+
 RAPIDS_PY_WHEEL_NAME="${package_name}_${RAPIDS_PY_CUDA_SUFFIX}" rapids-upload-wheels-to-s3 cpp "${package_dir}/final_dist"
diff --git a/ci/build_wheel_pylibcudf.sh b/ci/build_wheel_pylibcudf.sh
index c4a89f20f5f..5a8f3397714 100755
--- a/ci/build_wheel_pylibcudf.sh
+++ b/ci/build_wheel_pylibcudf.sh
@@ -25,4 +25,6 @@ python -m auditwheel repair \
     -w ${package_dir}/final_dist \
     ${package_dir}/dist/*
 
+./ci/validate_wheel.sh ${package_dir} final_dist
+
 RAPIDS_PY_WHEEL_NAME="pylibcudf_${RAPIDS_PY_CUDA_SUFFIX}" rapids-upload-wheels-to-s3 python ${package_dir}/final_dist
diff --git a/ci/validate_wheel.sh b/ci/validate_wheel.sh
new file mode 100755
index 00000000000..4db04fb8e17
--- /dev/null
+++ b/ci/validate_wheel.sh
@@ -0,0 +1,30 @@
+#!/bin/bash
+# Copyright (c) 2024, NVIDIA CORPORATION.
+
+set -euo pipefail
+
+package_dir=$1
+wheel_dir_relative_path=$2
+
+# TODO: pre-install these in ci-imgs
+rapids-logger "installing validation tools"
+python -m pip install \
+    -v \
+    'pydistcheck==0.8.0' \
+    'twine>=5.0.0'
+
+pyenv rehash
+
+cd "${package_dir}"
+
+rapids-logger "validate packages with 'pydistcheck'"
+
+pydistcheck \
+    --inspect \
+    "$(echo ${wheel_dir_relative_path}/*.whl)"
+
+rapids-logger "validate packages with 'twine'"
+
+twine check \
+    --strict \
+    "$(echo ${wheel_dir_relative_path}/*.whl)"
diff --git a/python/cudf/pyproject.toml b/python/cudf/pyproject.toml
index 41dedc4ff20..9925e99f919 100644
--- a/python/cudf/pyproject.toml
+++ b/python/cudf/pyproject.toml
@@ -83,6 +83,14 @@ cudf-pandas-tests = [
 Homepage = "https://github.com/rapidsai/cudf"
 Documentation = "https://docs.rapids.ai/api/cudf/stable/"
 
+[tool.pydistcheck]
+select = [
+    "distro-too-large-compressed",
+]
+
+# PyPI limit is 100 MiB, fail CI before we get too close to that
+max_allowed_size_compressed = '75M'
+
 [tool.pytest.ini_options]
 addopts = "--tb=native --strict-config --strict-markers"
 empty_parameter_set_mark = "fail_at_collect"
diff --git a/python/cudf_kafka/pyproject.toml b/python/cudf_kafka/pyproject.toml
index ec0bc0eb22b..b2ea3f06e48 100644
--- a/python/cudf_kafka/pyproject.toml
+++ b/python/cudf_kafka/pyproject.toml
@@ -47,6 +47,14 @@ rapids = ["rmm", "cudf", "dask_cudf"]
 [tool.ruff.lint.per-file-ignores]
 "__init__.py" = ["E402", "F401"]
 
+[tool.pydistcheck]
+select = [
+    "distro-too-large-compressed",
+]
+
+# PyPI limit is 100 MiB, fail CI before we get too close to that
+max_allowed_size_compressed = '75M'
+
 [tool.pytest.ini_options]
 addopts = "--tb=native --strict-config --strict-markers"
 empty_parameter_set_mark = "fail_at_collect"
diff --git a/python/cudf_polars/pyproject.toml b/python/cudf_polars/pyproject.toml
index 2e75dff5c9e..32ea142a96c 100644
--- a/python/cudf_polars/pyproject.toml
+++ b/python/cudf_polars/pyproject.toml
@@ -49,6 +49,14 @@ license-files = ["LICENSE"]
 [tool.setuptools.dynamic]
 version = {file = "cudf_polars/VERSION"}
 
+[tool.pydistcheck]
+select = [
+    "distro-too-large-compressed",
+]
+
+# PyPI limit is 100 MiB, fail CI before we get too close to that
+max_allowed_size_compressed = '75M'
+
 [tool.pytest.ini_options]
 addopts = "--tb=native --strict-config --strict-markers"
 empty_parameter_set_mark = "fail_at_collect"
diff --git a/python/custreamz/pyproject.toml b/python/custreamz/pyproject.toml
index d3baf3bf4d2..dd67a019c77 100644
--- a/python/custreamz/pyproject.toml
+++ b/python/custreamz/pyproject.toml
@@ -65,6 +65,14 @@ include = [
 ]
 exclude = ["*tests*"]
 
+[tool.pydistcheck]
+select = [
+    "distro-too-large-compressed",
+]
+
+# PyPI limit is 100 MiB, fail CI before we get too close to that
+max_allowed_size_compressed = '75M'
+
 [tool.ruff]
 extend = "../../pyproject.toml"
 
diff --git a/python/dask_cudf/pyproject.toml b/python/dask_cudf/pyproject.toml
index c7e4cbc45ea..168b65b9894 100644
--- a/python/dask_cudf/pyproject.toml
+++ b/python/dask_cudf/pyproject.toml
@@ -81,6 +81,14 @@ section-order = ["future", "standard-library", "third-party", "dask", "rapids",
 dask = ["dask", "distributed", "dask_cuda"]
 rapids = ["rmm", "cudf"]
 
+[tool.pydistcheck]
+select = [
+    "distro-too-large-compressed",
+]
+
+# PyPI limit is 100 MiB, fail CI before we get too close to that
+max_allowed_size_compressed = '75M'
+
 [tool.pytest.ini_options]
 addopts = "--tb=native --strict-config --strict-markers"
 empty_parameter_set_mark = "fail_at_collect"
diff --git a/python/libcudf/pyproject.toml b/python/libcudf/pyproject.toml
index 62726bb0df4..7820097cf40 100644
--- a/python/libcudf/pyproject.toml
+++ b/python/libcudf/pyproject.toml
@@ -48,6 +48,14 @@ Homepage = "https://github.com/rapidsai/cudf"
 [project.entry-points."cmake.prefix"]
 libcudf = "libcudf"
 
+[tool.pydistcheck]
+select = [
+    "distro-too-large-compressed",
+]
+
+# PyPI limit is 600 MiB, fail CI before we get too close to that
+max_allowed_size_compressed = '75M'
+
 [tool.scikit-build]
 build-dir = "build/{wheel_tag}"
 cmake.build-type = "Release"
diff --git a/python/pylibcudf/pyproject.toml b/python/pylibcudf/pyproject.toml
index ac3018b9333..ec324b684e0 100644
--- a/python/pylibcudf/pyproject.toml
+++ b/python/pylibcudf/pyproject.toml
@@ -68,6 +68,14 @@ rapids = ["rmm"]
 [tool.ruff.lint.per-file-ignores]
 "__init__.py" = ["E402", "F401"]
 
+[tool.pydistcheck]
+select = [
+    "distro-too-large-compressed",
+]
+
+# PyPI limit is 100 MiB, fail CI before we get too close to that
+max_allowed_size_compressed = '75M'
+
 [tool.pytest.ini_options]
 # --import-mode=importlib because two test_json.py exists and tests directory is not a structured module
 addopts = "--tb=native --strict-config --strict-markers --import-mode=importlib"