diff --git a/.github/workflows/CI_BracketingNonlinearSolve.yml b/.github/workflows/CI_BracketingNonlinearSolve.yml
deleted file mode 100644
index 9639534988..0000000000
--- a/.github/workflows/CI_BracketingNonlinearSolve.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-name: CI (BracketingNonlinearSolve)
-
-on:
-  pull_request:
-    paths:
-      - "lib/BracketingNonlinearSolve/**"
-      - ".github/workflows/CI_BracketingNonlinearSolve.yml"
-      - "lib/NonlinearSolveBase/**"
-      - "lib/SciMLJacobianOperators/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/BracketingNonlinearSolve"
-      local_dependencies: "lib/NonlinearSolveBase,lib/SciMLJacobianOperators"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/BracketingNonlinearSolve"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_NonlinearSolve.yml b/.github/workflows/CI_NonlinearSolve.yml
index 7fafa19a56..34b7178648 100644
--- a/.github/workflows/CI_NonlinearSolve.yml
+++ b/.github/workflows/CI_NonlinearSolve.yml
@@ -8,7 +8,7 @@ on:
       - "test/**"
       - "Project.toml"
       - ".github/workflows/CI_NonlinearSolve.yml"
-      - "lib/SciMLNonlinearOperators/**"
+      - "lib/SciMLJacobianOperators/**"
       - "lib/BracketingNonlinearSolve/**"
       - "lib/NonlinearSolveBase/**"
       - "lib/SimpleNonlinearSolve/**"
@@ -27,6 +27,7 @@ concurrency:
 
 jobs:
   test:
+    name: "Tests"
     strategy:
       fail-fast: false
       matrix:
@@ -50,54 +51,10 @@ jobs:
             version: "1.11"
           - group: trim
             version: "lts"
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
+    uses: "SciML/.github/.github/workflows/tests.yml@v1"
     with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
+      julia-version: "${{ matrix.version }}"
+      group: "${{ matrix.group }}"
+      os: "${{ matrix.os }}"
       project: "."
-      local_dependencies: "lib/BracketingNonlinearSolve,lib/NonlinearSolveBase,lib/NonlinearSolveFirstOrder,lib/NonlinearSolveQuasiNewton,lib/NonlinearSolveSpectralMethods,lib/SimpleNonlinearSolve"
-      test_args: "GROUP=${{ matrix.group }}"
-
-  # NOTE: Pre (Julia 1.13) tests are temporarily skipped due to ReTestItems incompatibility
-  # with Julia 1.13 ScopedValues API changes. See issue #776 for tracking.
-  test-pre:
-    if: false
-    strategy:
-      fail-fast: false
-      matrix:
-        group:
-          - core
-          - downstream
-          - wrappers
-          - misc
-          - trim
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "pre"
-      os: ${{ matrix.os }}
-      project: "."
-      local_dependencies: "lib/BracketingNonlinearSolve,lib/NonlinearSolveBase,lib/NonlinearSolveFirstOrder,lib/NonlinearSolveQuasiNewton,lib/NonlinearSolveSpectralMethods,lib/SimpleNonlinearSolve"
-      test_args: "GROUP=${{ matrix.group }}"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    strategy:
-      fail-fast: false
-      matrix:
-        group:
-          - core
-          - downstream
-          - wrappers
-          - misc
-          - nopre
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      project: "."
-      julia_version: "1.11"
-      downgrade_testing: true
-      test_args: "GROUP=${{ matrix.group }}"
+    secrets: "inherit"
diff --git a/.github/workflows/CI_NonlinearSolveBase.yml b/.github/workflows/CI_NonlinearSolveBase.yml
deleted file mode 100644
index 79e422f2ee..0000000000
--- a/.github/workflows/CI_NonlinearSolveBase.yml
+++ /dev/null
@@ -1,46 +0,0 @@
-name: CI (NonlinearSolveBase)
-
-on:
-  pull_request:
-    paths:
-      - "lib/NonlinearSolveBase/**"
-      - ".github/workflows/CI_NonlinearSolveBase.yml"
-      - "lib/SciMLJacobianOperators/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/NonlinearSolveBase"
-      local_dependencies: "lib/SciMLJacobianOperators"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/NonlinearSolveBase"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_NonlinearSolveFirstOrder.yml b/.github/workflows/CI_NonlinearSolveFirstOrder.yml
deleted file mode 100644
index 67e069054a..0000000000
--- a/.github/workflows/CI_NonlinearSolveFirstOrder.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-name: CI (NonlinearSolveFirstOrder)
-
-on:
-  pull_request:
-    paths:
-      - "lib/NonlinearSolveFirstOrder/**"
-      - ".github/workflows/CI_NonlinearSolveFirstOrder.yml"
-      - "lib/NonlinearSolveBase/**"
-      - "lib/SciMLJacobianOperators/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/NonlinearSolveFirstOrder"
-      local_dependencies: "lib/NonlinearSolveBase,lib/SciMLJacobianOperators"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/NonlinearSolveFirstOrder"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_NonlinearSolveHomotopyContinuation.yml b/.github/workflows/CI_NonlinearSolveHomotopyContinuation.yml
deleted file mode 100644
index 6c71aac7ed..0000000000
--- a/.github/workflows/CI_NonlinearSolveHomotopyContinuation.yml
+++ /dev/null
@@ -1,46 +0,0 @@
-name: CI (NonlinearSolveHomotopyContinuation)
-
-on:
-  pull_request:
-    paths:
-      - "lib/NonlinearSolveHomotopyContinuation/**"
-      - ".github/workflows/CI_NonlinearSolveHomotopyContinuation.yml"
-      - "lib/NonlinearSolveBase/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/NonlinearSolveHomotopyContinuation"
-      local_dependencies: "lib/NonlinearSolveBase"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/NonlinearSolveHomotopyContinuation"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_NonlinearSolveQuasiNewton.yml b/.github/workflows/CI_NonlinearSolveQuasiNewton.yml
deleted file mode 100644
index 4db29ef5df..0000000000
--- a/.github/workflows/CI_NonlinearSolveQuasiNewton.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-name: CI (NonlinearSolveQuasiNewton)
-
-on:
-  pull_request:
-    paths:
-      - "lib/NonlinearSolveQuasiNewton/**"
-      - ".github/workflows/CI_NonlinearSolveQuasiNewton.yml"
-      - "lib/NonlinearSolveBase/**"
-      - "lib/SciMLJacobianOperators/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/NonlinearSolveQuasiNewton"
-      local_dependencies: "lib/NonlinearSolveBase,lib/SciMLJacobianOperators"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/NonlinearSolveQuasiNewton"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_NonlinearSolveSciPy.yml b/.github/workflows/CI_NonlinearSolveSciPy.yml
deleted file mode 100644
index 938c5526f6..0000000000
--- a/.github/workflows/CI_NonlinearSolveSciPy.yml
+++ /dev/null
@@ -1,46 +0,0 @@
-name: CI (NonlinearSolveSciPy)
-
-on:
-  pull_request:
-    paths:
-      - "lib/NonlinearSolveSciPy/**"
-      - ".github/workflows/CI_NonlinearSolveSciPy.yml"
-      - "lib/NonlinearSolveBase/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/NonlinearSolveSciPy"
-      local_dependencies: "lib/NonlinearSolveBase,lib/SciMLJacobianOperators"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/NonlinearSolveSciPy"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_NonlinearSolveSpectralMethods.yml b/.github/workflows/CI_NonlinearSolveSpectralMethods.yml
deleted file mode 100644
index a09cf821f9..0000000000
--- a/.github/workflows/CI_NonlinearSolveSpectralMethods.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-name: CI (NonlinearSolveSpectralMethods)
-
-on:
-  pull_request:
-    paths:
-      - "lib/NonlinearSolveSpectralMethods/**"
-      - ".github/workflows/CI_NonlinearSolveSpectralMethods.yml"
-      - "lib/NonlinearSolveBase/**"
-      - "lib/SciMLJacobianOperators/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/NonlinearSolveSpectralMethods"
-      local_dependencies: "lib/NonlinearSolveBase,lib/SciMLJacobianOperators"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/NonlinearSolveSpectralMethods"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_SCCNonlinearSolve.yml b/.github/workflows/CI_SCCNonlinearSolve.yml
deleted file mode 100644
index 655e621436..0000000000
--- a/.github/workflows/CI_SCCNonlinearSolve.yml
+++ /dev/null
@@ -1,47 +0,0 @@
-name: CI (SCCNonlinearSolve)
-
-on:
-  pull_request:
-    paths:
-      - "lib/SCCNonlinearSolve/**"
-      - ".github/workflows/CI_SCCNonlinearSolve.yml"
-      - "lib/NonlinearSolveBase/**"
-      - "lib/SciMLJacobianOperators/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "lts"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/SCCNonlinearSolve"
-      local_dependencies: "lib/NonlinearSolveBase,lib/SciMLJacobianOperators"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/SCCNonlinearSolve"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_SciMLJacobianOperators.yml b/.github/workflows/CI_SciMLJacobianOperators.yml
deleted file mode 100644
index 6aef44582d..0000000000
--- a/.github/workflows/CI_SciMLJacobianOperators.yml
+++ /dev/null
@@ -1,44 +0,0 @@
-name: CI (SciMLJacobianOperators)
-
-on:
-  pull_request:
-    paths:
-      - "lib/SciMLJacobianOperators/**"
-      - ".github/workflows/CI_SciMLJacobianOperators.yml"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/SciMLJacobianOperators"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/SciMLJacobianOperators"
-      downgrade_testing: true
diff --git a/.github/workflows/CI_SimpleNonlinearSolve.yml b/.github/workflows/CI_SimpleNonlinearSolve.yml
deleted file mode 100644
index c981f5bfbf..0000000000
--- a/.github/workflows/CI_SimpleNonlinearSolve.yml
+++ /dev/null
@@ -1,61 +0,0 @@
-name: CI (SimpleNonlinearSolve)
-
-on:
-  pull_request:
-    paths:
-      - "lib/SimpleNonlinearSolve/**"
-      - ".github/workflows/CI_SimpleNonlinearSolve.yml"
-      - "lib/BracketingNonlinearSolve/**"
-      - "lib/NonlinearSolveBase/**"
-      - "lib/SciMLJacobianOperators/**"
-  push:
-    branches:
-      - master
-
-concurrency:
-  # Skip intermediate builds: always.
-  # Cancel intermediate builds: only if it is a pull request build.
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
-
-jobs:
-  test:
-    strategy:
-      fail-fast: false
-      matrix:
-        version:
-          - "1.10"
-          - "1.11"
-          - "1"
-        os:
-          - ubuntu-latest
-          - macos-latest
-        group:
-          - core
-          - adjoint
-          - alloc_check
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: ${{ matrix.version }}
-      os: ${{ matrix.os }}
-      project: "lib/SimpleNonlinearSolve"
-      local_dependencies: "lib/BracketingNonlinearSolve,lib/NonlinearSolveBase,lib/SciMLJacobianOperators"
-      test_args: "GROUP=${{ matrix.group }}"
-
-  # NOTE: Downgrade tests are temporarily skipped due to Resolver.jl incompatibility
-  # with [sources] in Project.toml. See issue #774 for tracking.
-  downgrade:
-    if: false
-    strategy:
-      fail-fast: false
-      matrix:
-        group:
-          - core
-          - adjoint
-          - alloc_check
-    uses: LuxDL/Lux.jl/.github/workflows/CommonCI.yml@main
-    with:
-      julia_version: "1.11"
-      project: "lib/SimpleNonlinearSolve"
-      downgrade_testing: true
-      test_args: "GROUP=${{ matrix.group }}"
diff --git a/.github/workflows/Documentation.yml b/.github/workflows/Documentation.yml
index f60360917b..0a9bf7d221 100644
--- a/.github/workflows/Documentation.yml
+++ b/.github/workflows/Documentation.yml
@@ -8,23 +8,12 @@ on:
     tags: ["*"]
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref_name != github.event.repository.default_branch || github.ref != 'refs/tags/v*' }}
+
 jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v3
-        with:
-          version: "1"
-      - uses: julia-actions/cache@v3
-      - uses: julia-actions/julia-buildpkg@v1
-      - uses: julia-actions/julia-docdeploy@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          DOCUMENTER_KEY: ${{ secrets.DOCUMENTER_KEY }}
-      - uses: julia-actions/julia-processcoverage@v1
-      - uses: codecov/codecov-action@v6
-        with:
-          files: lcov.info
-          token: ${{ secrets.CODECOV_TOKEN }}
-          fail_ci_if_error: false
+  build-and-deploy-docs:
+    name: "Documentation"
+    uses: "SciML/.github/.github/workflows/documentation.yml@v1"
+    secrets: "inherit"
diff --git a/.github/workflows/Downstream.yml b/.github/workflows/Downstream.yml
index 5484f6b5df..6ab3e461e8 100644
--- a/.github/workflows/Downstream.yml
+++ b/.github/workflows/Downstream.yml
@@ -1,25 +1,23 @@
 name: IntegrationTest
+
 on:
   push:
     branches: [master]
     tags: [v*]
   pull_request:
+
 concurrency:
   # Skip intermediate builds: always.
   # Cancel intermediate builds: only if it is a pull request build.
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+
 jobs:
   test:
-    name: ${{ matrix.package.repo }}/${{ matrix.package.group }}/${{ matrix.julia-version }}
-    runs-on: ${{ matrix.os }}
-    env:
-      GROUP: ${{ matrix.package.group }}
+    name: ${{ matrix.package.repo }}/${{ matrix.package.group }}
     strategy:
       fail-fast: false
       matrix:
-        julia-version: [1]
-        os: [ubuntu-latest]
         package:
           - {user: SciML, repo: ModelingToolkit.jl, group: InterfaceI}
           - {user: SciML, repo: ModelingToolkit.jl, group: InterfaceII}
@@ -28,51 +26,10 @@ jobs:
           - {user: SciML, repo: OrdinaryDiffEq.jl, group: Regression}
           - {user: SciML, repo: BoundaryValueDiffEq.jl, group: All}
           - {user: SciML, repo: DiffEqCallbacks.jl, group: Core}
-    steps:
-      - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v3
-        with:
-          version: ${{ matrix.julia-version }}
-          arch: x64
-      - name: "Install Dependencies"
-        run: |
-          import Pkg
-          Pkg.Registry.update()
-          # Install packages present in subdirectories
-          dev_pks = Pkg.PackageSpec[]
-          for path in ("lib/SciMLJacobianOperators", "lib/BracketingNonlinearSolve", "lib/NonlinearSolveBase", "lib/SimpleNonlinearSolve", "lib/NonlinearSolveFirstOrder", "lib/NonlinearSolveSpectralMethods", "lib/NonlinearSolveQuasiNewton")
-              push!(dev_pks, Pkg.PackageSpec(; path))
-          end
-          Pkg.develop(dev_pks)
-          Pkg.instantiate()
-        shell: julia --color=yes --code-coverage=user --depwarn=yes --project=. {0}
-      - name: Clone Downstream
-        uses: actions/checkout@v6
-        with:
-          repository: ${{ matrix.package.user }}/${{ matrix.package.repo }}
-          path: downstream
-      - name: Load this and run the downstream tests
-        shell: julia --color=yes --project=downstream {0}
-        run: |
-          using Pkg
-          try
-            # force it to use this PR's version of the package
-            Pkg.develop(PackageSpec(path="."))  # resolver may fail with main deps
-            Pkg.update()
-            Pkg.test(coverage="user")  # resolver may fail with test time deps
-          catch err
-            err isa Pkg.Resolve.ResolverError || rethrow()
-            # If we can't resolve that means this is incompatible by SemVer and this is fine
-            # It means we marked this as a breaking change, so we don't need to worry about
-            # Mistakenly introducing a breaking change, as we have intentionally made one
-            @info "Not compatible with this release. No problem." exception=err
-            exit(0)  # Exit immediately, as a success
-          end
-      - uses: julia-actions/julia-processcoverage@v1
-        with:
-          directories: src,ext
-      - uses: codecov/codecov-action@v6
-        with:
-          file: lcov.info
-          token: ${{ secrets.CODECOV_TOKEN }}
-          fail_ci_if_error: false
+    uses: "SciML/.github/.github/workflows/downstream.yml@v1"
+    with:
+      owner: "${{ matrix.package.user }}"
+      repo: "${{ matrix.package.repo }}"
+      group: "${{ matrix.package.group }}"
+      julia-version: "1"
+    secrets: "inherit"
diff --git a/.github/workflows/FormatCheck.yml b/.github/workflows/FormatCheck.yml
index ee667ceff5..32f2e1fbf6 100644
--- a/.github/workflows/FormatCheck.yml
+++ b/.github/workflows/FormatCheck.yml
@@ -11,12 +11,6 @@ on:
 
 jobs:
   runic:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v6
-      - uses: julia-actions/setup-julia@v3
-        with:
-          version: '1'
-      - uses: fredrikekre/runic-action@v1
-        with:
-          version: '1'
+    name: "Runic"
+    uses: "SciML/.github/.github/workflows/runic.yml@v1"
+    secrets: "inherit"
diff --git a/.github/workflows/SpellCheck.yml b/.github/workflows/SpellCheck.yml
index a7db4647af..a134515e21 100644
--- a/.github/workflows/SpellCheck.yml
+++ b/.github/workflows/SpellCheck.yml
@@ -4,10 +4,6 @@ on: [pull_request]
 
 jobs:
   typos-check:
-    name: Spell Check with Typos
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout Actions Repository
-        uses: actions/checkout@v6
-      - name: Check spelling
-        uses: crate-ci/typos@v1.43.3
\ No newline at end of file
+    name: "Spell Check with Typos"
+    uses: "SciML/.github/.github/workflows/spellcheck.yml@v1"
+    secrets: "inherit"
diff --git a/.github/workflows/SublibraryCI.yml b/.github/workflows/SublibraryCI.yml
new file mode 100644
index 0000000000..168137f615
--- /dev/null
+++ b/.github/workflows/SublibraryCI.yml
@@ -0,0 +1,25 @@
+name: Sublibrary CI
+
+on:
+  pull_request:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+  push:
+    branches:
+      - master
+    paths-ignore:
+      - 'docs/**'
+
+concurrency:
+  # Skip intermediate builds: always.
+  # Cancel intermediate builds: only if it is a pull request build.
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
+
+jobs:
+  sublibrary-ci:
+    name: "Sublibrary CI"
+    uses: "SciML/.github/.github/workflows/sublibrary-tests.yml@v1"
+    secrets: "inherit"