diff --git a/docs/reference/schemas/config/functions/endsWith.md b/docs/reference/schemas/config/functions/endsWith.md
new file mode 100644
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--- /dev/null
+++ b/docs/reference/schemas/config/functions/endsWith.md
@@ -0,0 +1,181 @@
+---
+description: Reference for the 'endsWith' DSC configuration document function
+ms.date:     08/12/2025
+ms.topic:    reference
+title:       endsWith
+---
+
+# endsWith
+
+## Synopsis
+
+Determines whether a string ends with the specified suffix.
+
+## Syntax
+
+```Syntax
+endsWith(<string>, <suffix>)
+```
+
+## Description
+
+The `endsWith()` function returns `true` if the first string ends with the
+specified suffix. Comparison is case-sensitive. Use it for conditional logic in
+configuration documents such as matching file extensions, environment name
+suffixes, or resource identifiers.
+
+## Examples
+
+### Example 1 - Check a file extension
+
+The following example checks if a specified filename ends with `.log`.
+
+```yaml
+# endswith.example.1.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  fileName:
+    type: string
+    defaultValue: application.log
+resources:
+- name: Check file extension
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      isLog: "[endsWith(parameters('fileName'), '.log')]"
+```
+
+```bash
+dsc config get --file endswith.example.1.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Check file extension
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        isLog: true
+messages: []
+hadErrors: false
+```
+
+### Example 2 - Conditional environment handling
+
+The following example uses `endsWith()` to build a message when an environment
+name ends with `-prod`.
+
+```yaml
+# endswith.example.2.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  environment:
+    type: string
+    defaultValue: web-prod
+resources:
+- name: Environment classification
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      classification: "[if(endsWith(parameters('environment'), '-prod'), 'Production', 'Non-production')]"
+```
+
+```bash
+dsc config get --file endswith.example.2.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Environment classification
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        classification: Production
+messages: []
+hadErrors: false
+```
+
+### Example 3 - Filter resource identifiers
+
+The following example shows checking multiple suffixes by combining conditions.
+
+```yaml
+# endswith.example.3.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  resourceId:
+    type: string
+    defaultValue: storage-westus-01
+resources:
+- name: Identify resource segment
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      isRegional: "[endsWith(parameters('resourceId'), '-01')]"
+      endsWithWest: "[endsWith(parameters('resourceId'), 'westus-01')]"
+      endsWithEast: "[endsWith(parameters('resourceId'), 'eastus-01')]"
+```
+
+```bash
+dsc config get --file endswith.example.3.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Identify resource segment
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        isRegional: true
+        endsWithWest: true
+        endsWithEast: false
+messages: []
+hadErrors: false
+```
+
+## Parameters
+
+### string
+
+The input string to evaluate.
+
+```yaml
+Type:     string
+Required: true
+Position: 1
+```
+
+### suffix
+
+The suffix string to test for.
+
+```yaml
+Type:     string
+Required: true
+Position: 2
+```
+
+## Output
+
+The `endsWith()` function returns a boolean value indicating whether the input
+string ends with the specified suffix.
+
+```yaml
+Type: bool
+```
+
+## Related functions
+
+- [`startsWith()`][00] - Determines whether a string starts with a prefix
+- [`concat()`][01] - Concatenates strings together
+- [`if()`][02] - Returns values based on a condition
+- [`string()`][03] - Converts values to strings
+
+<!-- Link reference definitions -->
+[00]: ./startsWith.md
+[01]: ./concat.md
+[02]: ./if.md
+[03]: ./string.md
diff --git a/docs/reference/schemas/config/functions/startsWith.md b/docs/reference/schemas/config/functions/startsWith.md
new file mode 100644
index 000000000..233bb4d1d
--- /dev/null
+++ b/docs/reference/schemas/config/functions/startsWith.md
@@ -0,0 +1,181 @@
+---
+description: Reference for the 'startsWith' DSC configuration document function
+ms.date:     08/12/2025
+ms.topic:    reference
+title:       startsWith
+---
+
+# startsWith
+
+## Synopsis
+
+Determines whether a string starts with the specified prefix.
+
+## Syntax
+
+```Syntax
+startsWith(<string>, <prefix>)
+```
+
+## Description
+
+The `startsWith()` function returns `true` if the first string starts with the
+specified prefix. Comparison is case-sensitive. Use it for conditional logic in
+configuration documents such as grouping resource names, validating identifiers,
+or routing operations based on naming conventions.
+
+## Examples
+
+### Example 1 - Validate resource naming convention
+
+The following example checks if a resource name follows a standard prefix.
+
+```yaml
+# startswith.example.1.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  resourceName:
+    type: string
+    defaultValue: svc-api-west
+resources:
+- name: Resource naming check
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      hasSvcPrefix: "[startsWith(parameters('resourceName'), 'svc-')]"
+```
+
+```bash
+dsc config get --file startswith.example.1.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Resource naming check
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        hasSvcPrefix: true
+messages: []
+hadErrors: false
+```
+
+### Example 2 - Conditional routing
+
+The following example shows using `startsWith()` with `if()` to categorize a
+service by its name prefix.
+
+```yaml
+# startswith.example.2.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  serviceName:
+    type: string
+    defaultValue: api-orders
+resources:
+- name: Service classification
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      classification: "[if(startsWith(parameters('serviceName'), 'api-'), 'API Service', 'Other Service')]"
+```
+
+```bash
+dsc config get --file startswith.example.2.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Service classification
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        classification: API Service
+messages: []
+hadErrors: false
+```
+
+### Example 3 - Multi-prefix evaluation
+
+The following example evaluates multiple possible prefixes.
+
+```yaml
+# startswith.example.3.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  name:
+    type: string
+    defaultValue: db-primary-01
+resources:
+- name: Prefix grouping
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      isDb: "[startsWith(parameters('name'), 'db-')]"
+      isApi: "[startsWith(parameters('name'), 'api-')]"
+      isCache: "[startsWith(parameters('name'), 'cache-')]"
+```
+
+```bash
+dsc config get --file startswith.example.3.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Prefix grouping
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        isDb: true
+        isApi: false
+        isCache: false
+messages: []
+hadErrors: false
+```
+
+## Parameters
+
+### string
+
+The input string to evaluate.
+
+```yaml
+Type:     string
+Required: true
+Position: 1
+```
+
+### prefix
+
+The prefix string to test for.
+
+```yaml
+Type:     string
+Required: true
+Position: 2
+```
+
+## Output
+
+The `startsWith()` function returns a boolean value indicating whether the
+input string starts with the specified prefix.
+
+```yaml
+Type: bool
+```
+
+## Related functions
+
+- [`endsWith()`][00] - Determines whether a string ends with a suffix
+- [`concat()`][01] - Concatenates strings together
+- [`if()`][02] - Returns values based on a condition
+- [`string()`][03] - Converts values to strings
+
+<!-- Link reference definitions -->
+[00]: ./endsWith.md
+[01]: ./concat.md
+[02]: ./if.md
+[03]: ./string.md
diff --git a/docs/reference/schemas/config/functions/uniqueString.md b/docs/reference/schemas/config/functions/uniqueString.md
new file mode 100644
index 000000000..c1340a0fd
--- /dev/null
+++ b/docs/reference/schemas/config/functions/uniqueString.md
@@ -0,0 +1,197 @@
+---
+description: Reference for the 'uniqueString' DSC configuration document function
+ms.date:     08/12/2025
+ms.topic:    reference
+title:       uniqueString
+---
+
+# uniqueString
+
+## Synopsis
+
+Creates a deterministic lowercase Base32 string from one or more input strings.
+
+## Syntax
+
+```Syntax
+uniqueString(<value1>[, <value2>, ...])
+```
+
+## Description
+
+The `uniqueString()` function produces a stable hash-based string from one or
+more input strings. The inputs are concatenated with dash (`-`) separators then
+hashed using MurmurHash64 and Base32-encoded (RFC 4648 lowercase, no padding).
+The same inputs always produce the same output, making it useful for generating
+repeatable names that satisfy length and character constraints.
+
+Because the output is a non-cryptographic hash, there's no direct reverse
+operation, but it doesn't provide secrecy. If the possible inputs are
+predictable (such as a small set of env, region, or service names), an attacker
+can brute-force or dictionary-guess the original values by recomputing hashes.
+Don't use `uniqueString()` for secrets or security decisions. Use it only for
+stable, deterministic naming.
+
+## Examples
+
+### Example 1 - Generate a name from components
+
+The following example generates a unique, deterministic identifier from a set
+of input properties.
+
+```yaml
+# uniquestring.example.1.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  env:
+    type: string
+    defaultValue: prod
+  service:
+    type: string
+    defaultValue: billing
+  region:
+    type: string
+    defaultValue: westus
+resources:
+- name: Deterministic name
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      name: "[uniqueString(parameters('env'), parameters('service'), parameters('region'))]"
+```
+
+```bash
+dsc config get --file uniquestring.example.1.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Deterministic name
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        name: f5saooq7aoueg
+messages: []
+hadErrors: false
+```
+
+### Example 2 - Stable bucket partition keys
+
+The following example shows using `uniqueString()` to build a stable partition
+key for storage or grouping.
+
+```yaml
+# uniquestring.example.2.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  tenantId:
+    type: string
+    defaultValue: tenantA
+  dataType:
+    type: string
+    defaultValue: metrics
+resources:
+- name: Partition key generation
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      partitionKey: "[uniqueString(parameters('tenantId'), parameters('dataType'))]"
+```
+
+```bash
+dsc config get --file uniquestring.example.2.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Partition key generation
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        partitionKey: i5w466eimgg52
+messages: []
+hadErrors: false
+```
+
+### Example 3 - Compose with other functions
+
+The following example builds a prefixed resource identifier combining a literal
+prefix and the hash output.
+
+```yaml
+# uniquestring.example.3.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  project:
+    type: string
+    defaultValue: analytics
+  zone:
+    type: string
+    defaultValue: eu-central
+resources:
+- name: Prefixed identifier
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      resourceId: "[concat('res-', uniqueString(parameters('project'), parameters('zone')))]"
+```
+
+```bash
+dsc config get --file uniquestring.example.3.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Prefixed identifier
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        resourceId: res-ce56slj5eites
+messages: []
+hadErrors: false
+```
+
+## Parameters
+
+### value1
+
+The first string value to include in the hash input sequence.
+
+```yaml
+Type:     string
+Required: true
+Position: 1
+```
+
+### value2, ... (additional values)
+
+Optional additional string values to include. Each is appended with a dash
+separator before hashing. Argument order affects the result.
+
+```yaml
+Type:     string
+Required: false
+Position: 2+
+```
+
+## Output
+
+The `uniqueString()` function returns a deterministic lowercase Base32 string.
+
+```yaml
+Type: string
+```
+
+## Related functions
+
+- [`concat()`][00] - Concatenates strings together
+- [`string()`][01] - Converts values to strings
+- [`utcNow()`][02] - Returns the current UTC timestamp
+
+<!-- Link reference definitions -->
+[00]: ./concat.md
+[01]: ./string.md
+[02]: ./utcNow.md
diff --git a/docs/reference/schemas/config/functions/utcNow.md b/docs/reference/schemas/config/functions/utcNow.md
new file mode 100644
index 000000000..1da6b810d
--- /dev/null
+++ b/docs/reference/schemas/config/functions/utcNow.md
@@ -0,0 +1,173 @@
+---
+description: Reference for the 'utcNow' DSC configuration document function
+ms.date:     08/12/2025
+ms.topic:    reference
+title:       utcNow
+---
+
+# utcNow
+
+## Synopsis
+
+Returns the current UTC timestamp when used as a parameter default.
+
+## Syntax
+
+```Syntax
+utcNow()
+utcNow(<format>)
+```
+
+## Description
+
+The `utcNow()` function returns the current time in UTC. It can only be used
+when defining the `defaultValue` of a parameter in a configuration document.
+Using it elsewhere produces an error. When called without arguments, it returns
+an ISO 8601 timestamp with microsecond precision. When a format string is
+provided, the output uses that custom format.
+
+The format string uses a subset of .NET date/time format patterns that DSC
+internally maps to its formatting system. Unsupported tokens are passed
+through literally.
+
+## Examples
+
+### Example 1 - Parameter default timestamp
+
+The following example assigns the current UTC time as a default parameter
+value, then echoes it.
+
+```yaml
+# utcnow.example.1.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  generatedAt:
+    type: string
+    defaultValue: "[utcNow()]"
+resources:
+- name: Show timestamp
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      generatedAt: "[parameters('generatedAt')]"
+```
+
+```bash
+dsc config get --file utcnow.example.1.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Show timestamp
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        generatedAt: 2025-08-12T14:23:05.123456Z
+messages: []
+hadErrors: false
+```
+
+### Example 2 - Custom formatted timestamp
+
+The following example uses a custom format string to produce a friendly date
+stamp. The format maps .NET patterns (`yyyy-MM-dd HH:mm:ss`) to the internal
+formatter.
+
+```yaml
+# utcnow.example.2.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  buildStamp:
+    type: string
+    defaultValue: "[utcNow('yyyy-MM-dd HH:mm:ss')]"
+resources:
+- name: Build metadata
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      buildStamp: "[parameters('buildStamp')]"
+```
+
+```bash
+dsc config get --file utcnow.example.2.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: Build metadata
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        buildStamp: 2025-08-12 14:23:05
+messages: []
+hadErrors: false
+```
+
+### Example 3 - Combine with other functions
+
+The following example combines `utcNow()` with `concat()` and `string()` to
+build an identifier that contains a timestamp.
+
+```yaml
+# utcnow.example.3.dsc.config.yaml
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+parameters:
+  timestamp:
+    type: string
+    defaultValue: "[utcNow('yyyyMMdd-HHmmss')]"
+resources:
+- name: ID generator
+  type: Microsoft.DSC.Debug/Echo
+  properties:
+    output:
+      releaseId: "[concat('release-', parameters('timestamp'))]"
+```
+
+```bash
+dsc config get --file utcnow.example.3.dsc.config.yaml
+```
+
+```yaml
+results:
+- name: ID generator
+  type: Microsoft.DSC.Debug/Echo
+  result:
+    actualState:
+      output:
+        releaseId: release-20250812-142305
+messages: []
+hadErrors: false
+```
+
+## Parameters
+
+### format
+
+An optional date/time format string using .NET-style tokens. If omitted, the
+function returns an ISO 8601 UTC timestamp with microsecond precision.
+
+```yaml
+Type:     string
+Required: false
+```
+
+## Output
+
+The `utcNow()` function returns the current UTC timestamp as a string.
+
+```yaml
+Type: string
+```
+
+## Related functions
+
+- [`string()`][00] - Converts values to strings
+- [`concat()`][01] - Concatenates strings together
+- [`uniqueString()`][02] - Produces a deterministic hash-based string
+
+<!-- Link reference definitions -->
+[00]: ./string.md
+[01]: ./concat.md
+[02]: ./uniqueString.md