diff --git a/.github/actions/build-docs/action.yml b/.github/actions/build-docs/action.yml
new file mode 100644
index 0000000..f94fd61
--- /dev/null
+++ b/.github/actions/build-docs/action.yml
@@ -0,0 +1,21 @@
+name: Build Documentation
+description: 'Build Documentation.'
+
+runs:
+  using: composite
+  steps:
+    - name: Setup dotnet build tools
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 9.0
+    - name: Install docfx
+      shell: bash
+      run:  dotnet tool update -g docfx
+
+    # Note: in the docfx.json file, the 'Configuration' property is set to Debug so that we don't require
+    # signing to happen just to build docs.
+    - name: Build docs
+      shell: bash
+      run: |
+        docfx metadata
+        docfx build
diff --git a/.github/actions/publish-docs/action.yml b/.github/actions/publish-docs/action.yml
new file mode 100644
index 0000000..17a6a40
--- /dev/null
+++ b/.github/actions/publish-docs/action.yml
@@ -0,0 +1,24 @@
+name: Publish Documentation
+description: 'Publish the documentation to Github pages'
+inputs:
+  dry_run:
+    description: 'Is this a dry run. If so no package will be published.'
+    required: true
+  token:
+    description: 'Token to use for publishing.'
+    required: true
+
+runs:
+  using: composite
+  steps:
+    - uses: launchdarkly/gh-actions/actions/publish-pages@publish-pages-v1.0.2
+      if: ${{ inputs.dry_run == 'false' }}
+      name: 'Publish to Github pages'
+      with:
+        docs_path: docs
+        github_token: ${{ inputs.token }}
+    - name: Dry Run Publish
+      if: ${{ inputs.dry_run == 'true' }}
+      shell: bash
+      run: |
+        echo "This is a dry run and docs are not being published."
diff --git a/.github/actions/publish/action.yml b/.github/actions/publish/action.yml
new file mode 100644
index 0000000..a259f11
--- /dev/null
+++ b/.github/actions/publish/action.yml
@@ -0,0 +1,50 @@
+name: Publish Package
+description: 'Packs DLLs into unsigned Nuget package and publishes to Nuget.'
+inputs:
+  dry_run:
+    description: 'Is this a dry run. If so no package will be published.'
+    required: true
+outputs:
+  hashes:
+    description: sha256sum hashes of built artifacts
+    value: ${{ steps.hash.outputs.hashes }}
+
+runs:
+  using: composite
+  steps:
+    - name: Setup dotnet build tools
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 9.0
+
+    - name: Create Nuget Package
+      shell: bash
+      run: |
+        dotnet restore ./src/LaunchDarkly.EventSource/LaunchDarkly.EventSource.csproj
+        dotnet pack --no-build --output nupkgs --configuration Release ./src/LaunchDarkly.EventSource/LaunchDarkly.EventSource.csproj
+
+    - name: Publish Package
+      if: ${{ inputs.dry_run == 'false' }}
+      shell: bash
+      run: |
+        for pkg in $(find ./nupkgs -name '*.nupkg' -o -name '*.snupkg'); do
+          echo "publishing ${pkg}"
+          dotnet nuget push "${pkg}" --api-key ${{ env.NUGET_API_KEY }} --source https://www.nuget.org
+          echo "published ${pkg}"
+        done
+
+    - name: Hash nuget packages
+      id: hash
+      if: ${{ inputs.dry_run == 'false' }}
+      shell: bash
+      run: |
+        echo "hashes=$(sha256sum ./nupkgs/*.nupkg ./nupkgs/*.snupkg | base64 -w0)" >> "$GITHUB_OUTPUT"
+
+    - name: Dry Run Publish
+      if: ${{ inputs.dry_run == 'true' }}
+      shell: bash
+      run: |
+        echo "This is a dry run and packages are not being published."
+        for pkg in $(find ./nupkgs -name '*.nupkg' -o -name '*.snupkg'); do
+          echo "detected package ${pkg}"
+        done
diff --git a/.github/actions/release-build/action.yml b/.github/actions/release-build/action.yml
new file mode 100644
index 0000000..45a5be1
--- /dev/null
+++ b/.github/actions/release-build/action.yml
@@ -0,0 +1,18 @@
+name: Release Build
+description: 'Build in Release Configuration'
+
+runs:
+  using: composite
+  steps:
+    - name: Setup dotnet build tools
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 9.0
+
+    - name: Restore Packages
+      shell: bash
+      run: dotnet restore
+
+    - name: Build
+      shell: bash
+      run: dotnet build /p:Configuration=Release ./src/LaunchDarkly.EventSource/LaunchDarkly.EventSource.csproj
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 921cc1a..09f9490 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,3 +35,6 @@ jobs:
       - run: dotnet build src/LaunchDarkly.EventSource/LaunchDarkly.EventSource.csproj
 
       - run: dotnet test test/LaunchDarkly.EventSource.Tests/LaunchDarkly.EventSource.Tests.csproj
+
+      - name: build docs
+        uses: ./.github/actions/build-docs
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
new file mode 100644
index 0000000..7b99445
--- /dev/null
+++ b/.github/workflows/publish.yml
@@ -0,0 +1,86 @@
+name: Publish Package
+
+on:
+  workflow_dispatch:
+    inputs:
+      dry_run:
+        description: 'Is this a dry run. If so no package will be published.'
+        type: boolean
+        required: true
+      tag:
+        description: 'Tag for provenance. For a dry run the value does not matter.'
+        type: string
+        required: true
+
+  workflow_call:
+    inputs:
+      dry_run:
+        description: 'Is this a dry run. If so no package will be published.'
+        type: boolean
+        required: true
+      tag:
+        description: 'Tag for provenance'
+        type: string
+        required: true
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write # Needed if using OIDC to get release secrets.
+      contents: write # Contents and pull-requests are for release-please to make releases.
+      pull-requests: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: launchdarkly/gh-actions/actions/release-secrets@release-secrets-v1.2.0
+        name: Get secrets
+        with:
+          aws_assume_role: ${{ vars.AWS_ROLE_ARN }}
+          ssm_parameter_pairs: '/production/common/releasing/digicert/host = DIGICERT_HOST,
+            /production/common/releasing/digicert/api_key = DIGICERT_API_KEY,
+            /production/common/releasing/digicert/client_cert_file_b64 = DIGICERT_CLIENT_CERT_FILE_B64,
+            /production/common/releasing/digicert/client_cert_password = DIGICERT_CLIENT_CERT_PASSWORD,
+            /production/common/releasing/digicert/code_signing_cert_sha1_hash = DIGICERT_CODE_SIGNING_CERT_SHA1_HASH,
+            /production/common/releasing/nuget/api_key = NUGET_API_KEY'
+          s3_path_pairs: 'launchdarkly-releaser/dotnet/LaunchDarkly.EventSource.snk = LaunchDarkly.EventSource.snk'
+
+
+      - name: Build Release
+        uses: ./.github/actions/release-build
+
+      - name: Build Documentation
+        uses: ./.github/actions/build-docs
+
+      - name: Sign DLLs
+        uses: launchdarkly/gh-actions/actions/sign-dlls@sign-dlls-v1.0.0
+        with:
+          build_configuration_path: ./src/LaunchDarkly.EventSource/bin/Release
+          dll_name: LaunchDarkly.EventSource.Microsoft.dll
+
+      - name: Publish Nupkg
+        id: publish
+        uses: ./.github/actions/publish
+        with:
+          dry_run: ${{ inputs.dry_run }}
+
+      - name: Publish Documentation
+        uses: ./.github/actions/publish-docs
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          dry_run: ${{ inputs.dry_run }}
+
+  provenance:
+    permissions:
+      actions: read
+      id-token: write
+      contents: write
+    if: ${{ inputs.dry_run  == 'false' }}
+    needs: ['publish']
+    uses: slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@v1.10.0
+    with:
+      base64-subjects: "${{ needs.publish.outputs.hashes }}"
+      upload-assets: true
+      upload-tag-name: ${{ inputs.tag }}
+      provenance-name: ${{ format('LaunchDarkly.EventSource-{0}_provenance.intoto.jsonl', inputs.tag) }}
diff --git a/.github/workflows/release-please.yml b/.github/workflows/release-please.yml
new file mode 100644
index 0000000..522eb94
--- /dev/null
+++ b/.github/workflows/release-please.yml
@@ -0,0 +1,36 @@
+name: Release Please
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  release-please:
+    outputs:
+      releases_created: ${{ steps.release.outputs.releases_created }}
+      tag_name: ${{ steps.release.outputs.tag_name }}
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write # Needed if using OIDC to get release secrets.
+      contents: write # Contents and pull-requests are for release-please to make releases.
+      pull-requests: write
+
+    steps:
+      - uses: googleapis/release-please-action@v4
+        id: release
+        with:
+          token: ${{secrets.GITHUB_TOKEN}}
+          default-branch: main
+
+  ci:
+    needs: ['release-please']
+    if: ${{ needs.release-please.outputs.releases_created == 'true' }}
+    uses: ./.github/workflows/ci.yml
+  publish:
+    needs: ['release-please', 'ci']
+    if: ${{ needs.release-please.outputs.releases_created == 'true' }}
+    uses: ./.github/workflows/publish.yml
+    with:
+      dry_run: false
+      tag: ${{ needs.release-please.outputs.tag_name }}
diff --git a/.gitignore b/.gitignore
index 2a2eec5..341abce 100644
--- a/.gitignore
+++ b/.gitignore
@@ -97,9 +97,6 @@ DocProject/Help/*.hhp
 DocProject/Help/Html2
 DocProject/Help/html
 
-# Click-Once directory
-publish
-
 # Others
 [Bb]in
 [Oo]bj
@@ -179,3 +176,6 @@ project.lock.json
 
 *.snk
 *.p12
+
+api/
+docs/
diff --git a/.ldrelease/config.yml b/.ldrelease/config.yml
deleted file mode 100644
index a58dc66..0000000
--- a/.ldrelease/config.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-version: 2
-
-publications:
-  - url: https://nuget.org/packages/LaunchDarkly.EventSource
-    description: NuGet
-
-branches:
-  - name: main
-    description: 5.x - for server-side .NET SDK 7.0+ and client-side .NET SDK 3.0+
-  - name: 4.x
-    description: for .NET SDK 6.0+ and Xamarin SDK 2.0+
-  - name: 3.x
-    description: for earlier .NET and Xamarin SDKs
-
-jobs:
-  - template:
-      name: dotnet6-linux
-    env:
-      LD_RELEASE_DOCS_TARGET_FRAMEWORK: netstandard2.0
-      LD_RELEASE_TEST_TARGET_FRAMEWORK: net6.0
-
-documentation:
-  gitHubPages: true
-  title: LaunchDarkly .NET EventSource Client
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
new file mode 100644
index 0000000..affd1ab
--- /dev/null
+++ b/.release-please-manifest.json
@@ -0,0 +1,3 @@
+{
+  ".": "5.1.0"
+}
diff --git a/docfx.json b/docfx.json
new file mode 100644
index 0000000..990436b
--- /dev/null
+++ b/docfx.json
@@ -0,0 +1,48 @@
+{
+  "metadata": [
+    {
+      "src": [
+        {
+          "src": "./src",
+          "files": [
+            "**/*.csproj",
+            "**/bin/**/**LaunchDarkly**.dll"
+          ]
+        }
+      ],
+      "dest": "./api",
+      "properties" : {
+        "Configuration": "Debug"
+      }
+    }
+  ],
+  "build": {
+    "content": [
+      {
+        "files": [
+          "**/*.{md,yml}"
+        ],
+        "exclude": [
+          "docs/**"
+        ]
+      }
+    ],
+    "resource": [
+      {
+        "files": [
+          "images/**"
+        ]
+      }
+    ],
+    "output": "docs",
+    "template": [
+      "default"
+    ],
+    "globalMetadata": {
+      "_appName": "LaunchDarkly EventSource for .NET",
+      "_appTitle": "LaunchDarkly EventSource for .NET",
+      "_enableSearch": true,
+      "pdf": false
+    }
+  }
+}
diff --git a/release-please-config.json b/release-please-config.json
new file mode 100644
index 0000000..1f0b85a
--- /dev/null
+++ b/release-please-config.json
@@ -0,0 +1,10 @@
+{
+  "packages": {
+    ".": {
+      "release-type": "simple",
+      "bootstrap-sha": "42cd339937a4affdbe94ab0d49694a86eb85c75f",
+      "include-v-in-tag": false,
+      "include-component-in-tag": false
+    }
+  }
+}