diff --git a/packages/@aws-cdk/assertions/README.md b/packages/@aws-cdk/assertions/README.md
index 62ae9b8ae0aaa..d2894fafe1df8 100644
--- a/packages/@aws-cdk/assertions/README.md
+++ b/packages/@aws-cdk/assertions/README.md
@@ -102,7 +102,18 @@ The following code asserts that the `Properties` section of a resource of type
 
 ```ts
 template.hasResourceProperties('Foo::Bar', {
-  Foo: 'Bar',
+  Lorem: 'Ipsum',
+  Baz: 5,
+  Qux: [ 'Waldo', 'Fred' ],
+});
+```
+
+You can also assert that the `Properties` section of all resources of type
+`Foo::Bar` contains the specified properties -
+
+```ts
+template.allResourcesProperties('Foo::Bar', {
+  Lorem: 'Ipsum',
   Baz: 5,
   Qux: [ 'Waldo', 'Fred' ],
 });
@@ -113,7 +124,17 @@ can use the `hasResource()` API.
 
 ```ts
 template.hasResource('Foo::Bar', {
-  Properties: { Foo: 'Bar' },
+  Properties: { Lorem: 'Ipsum' },
+  DependsOn: [ 'Waldo', 'Fred' ],
+});
+```
+
+You can also assert the definitions of all resources of a type using the 
+`allResources()` API.
+
+```ts
+template.allResources('Foo::Bar', {
+  Properties: { Lorem: 'Ipsum' },
   DependsOn: [ 'Waldo', 'Fred' ],
 });
 ```
diff --git a/packages/@aws-cdk/assertions/lib/private/resources.ts b/packages/@aws-cdk/assertions/lib/private/resources.ts
index 1312a5bfa4ed7..155156df5b9a1 100644
--- a/packages/@aws-cdk/assertions/lib/private/resources.ts
+++ b/packages/@aws-cdk/assertions/lib/private/resources.ts
@@ -1,6 +1,6 @@
 import { Match, Matcher } from '..';
 import { AbsentMatch } from './matchers/absent';
-import { formatFailure, matchSection } from './section';
+import { formatAllMismatches, formatFailure, matchSection } from './section';
 import { Resource, Template } from './template';
 
 export function findResources(template: Template, type: string, props: any = {}): { [key: string]: { [key: string]: any } } {
@@ -14,6 +14,42 @@ export function findResources(template: Template, type: string, props: any = {})
   return result.matches;
 }
 
+export function allResources(template: Template, type: string, props: any): string | void {
+  const section = template.Resources ?? {};
+  const result = matchSection(filterType(section, type), props);
+  if (result.match) {
+    const matchCount = Object.keys(result.matches).length;
+    if (result.analyzedCount > matchCount) {
+      return [
+        `Template has ${result.analyzedCount} resource(s) with type ${type}, but only ${matchCount} match as expected.`,
+        formatAllMismatches(result.analyzed, result.matches),
+      ].join('\n');
+    }
+  } else {
+    return [
+      `Template has ${result.analyzedCount} resource(s) with type ${type}, but none match as expected.`,
+      formatAllMismatches(result.analyzed),
+    ].join('\n');
+  }
+}
+
+export function allResourcesProperties(template: Template, type: string, props: any): string | void {
+  let amended = template;
+
+  // special case to exclude AbsentMatch because adding an empty Properties object will affect its evaluation.
+  if (!Matcher.isMatcher(props) || !(props instanceof AbsentMatch)) {
+    // amended needs to be a deep copy to avoid modifying the template.
+    amended = JSON.parse(JSON.stringify(template));
+    amended = addEmptyProperties(amended);
+  }
+
+  return allResources(amended, type, Match.objectLike({
+    Properties: props,
+  }));
+
+}
+
+
 export function hasResource(template: Template, type: string, props: any): string | void {
   const section = template.Resources ?? {};
   const result = matchSection(filterType(section, type), props);
diff --git a/packages/@aws-cdk/assertions/lib/private/section.ts b/packages/@aws-cdk/assertions/lib/private/section.ts
index 2468e47f33c1c..3d81f2f1ce682 100644
--- a/packages/@aws-cdk/assertions/lib/private/section.ts
+++ b/packages/@aws-cdk/assertions/lib/private/section.ts
@@ -1,25 +1,25 @@
 import { Match } from '../match';
 import { Matcher, MatchResult } from '../matcher';
 
-export type MatchSuccess = { match: true, matches: {[key: string]: any} };
-export type MatchFailure = { match: false, closestResult?: MatchResult, analyzedCount: number };
+export type MatchSuccess = { match: true, matches: { [key: string]: any }, analyzed: { [key: string]: any }, analyzedCount: number };
+export type MatchFailure = { match: false, closestResult?: MatchResult, analyzed: { [key: string]: any }, analyzedCount: number };
 
 export function matchSection(section: any, props: any): MatchSuccess | MatchFailure {
   const matcher = Matcher.isMatcher(props) ? props : Match.objectLike(props);
   let closestResult: MatchResult | undefined = undefined;
-  let matching: {[key: string]: any} = {};
-  let count = 0;
+  let matching: { [key: string]: any } = {};
+  let analyzed: { [key: string]: any } = {};
 
   eachEntryInSection(
     section,
 
     (logicalId, entry) => {
+      analyzed[logicalId] = entry;
       const result = matcher.test(entry);
       result.finished();
       if (!result.hasFailed()) {
         matching[logicalId] = entry;
       } else {
-        count++;
         if (closestResult === undefined || closestResult.failCount > result.failCount) {
           closestResult = result;
         }
@@ -27,15 +27,15 @@ export function matchSection(section: any, props: any): MatchSuccess | MatchFail
     },
   );
   if (Object.keys(matching).length > 0) {
-    return { match: true, matches: matching };
+    return { match: true, matches: matching, analyzedCount: Object.keys(analyzed).length, analyzed: analyzed };
   } else {
-    return { match: false, closestResult, analyzedCount: count };
+    return { match: false, closestResult, analyzedCount: Object.keys(analyzed).length, analyzed: analyzed };
   }
 }
 
 function eachEntryInSection(
   section: any,
-  cb: (logicalId: string, entry: {[key: string]: any}) => void): void {
+  cb: (logicalId: string, entry: { [key: string]: any }) => void): void {
 
   for (const logicalId of Object.keys(section ?? {})) {
     const resource: { [key: string]: any } = section[logicalId];
@@ -43,12 +43,19 @@ function eachEntryInSection(
   }
 }
 
-export function formatAllMatches(matches: {[key: string]: any}): string {
+export function formatAllMatches(matches: { [key: string]: any }): string {
   return [
     leftPad(JSON.stringify(matches, undefined, 2)),
   ].join('\n');
 }
 
+export function formatAllMismatches(analyzed: { [key: string]: any }, matches: { [key: string]: any } = {}): string {
+  return [
+    'The following resources do not match the given definition:',
+    ...Object.keys(analyzed).filter(id => !(id in matches)).map(id => `\t${id}`),
+  ].join('\n');
+}
+
 export function formatFailure(closestResult: MatchResult): string {
   return [
     'The closest result is:',
diff --git a/packages/@aws-cdk/assertions/lib/template.ts b/packages/@aws-cdk/assertions/lib/template.ts
index ccc77ad555ec7..8eadc4b15aea0 100644
--- a/packages/@aws-cdk/assertions/lib/template.ts
+++ b/packages/@aws-cdk/assertions/lib/template.ts
@@ -8,7 +8,7 @@ import { checkTemplateForCyclicDependencies } from './private/cyclic';
 import { findMappings, hasMapping } from './private/mappings';
 import { findOutputs, hasOutput } from './private/outputs';
 import { findParameters, hasParameter } from './private/parameters';
-import { countResources, countResourcesProperties, findResources, hasResource, hasResourceProperties } from './private/resources';
+import { allResources, allResourcesProperties, countResources, countResourcesProperties, findResources, hasResource, hasResourceProperties } from './private/resources';
 import { Template as TemplateType } from './private/template';
 
 /**
@@ -114,7 +114,7 @@ export class Template {
    * By default, performs partial matching on the resource, via the `Match.objectLike()`.
    * To configure different behavour, use other matchers in the `Match` class.
    * @param type the resource type; ex: `AWS::S3::Bucket`
-   * @param props the entire defintion of the resource as should be expected in the template.
+   * @param props the entire definition of the resource as should be expected in the template.
    */
   public hasResource(type: string, props: any): void {
     const matchError = hasResource(this.template, type, props);
@@ -134,6 +134,36 @@ export class Template {
     return findResources(this.template, type, props);
   }
 
+  /**
+   * Assert that all resources of the given type contain the given definition in the
+   * CloudFormation template.
+   * By default, performs partial matching on the resource, via the `Match.objectLike()`.
+   * To configure different behavour, use other matchers in the `Match` class.
+   * @param type the resource type; ex: `AWS::S3::Bucket`
+   * @param props the entire definition of the resources as they should be expected in the template.
+   */
+  public allResources(type: string, props: any): void {
+    const matchError = allResources(this.template, type, props);
+    if (matchError) {
+      throw new Error(matchError);
+    }
+  }
+
+  /**
+   * Assert that all resources of the given type contain the given properties
+   * CloudFormation template.
+   * By default, performs partial matching on the `Properties` key of the resource, via the
+   * `Match.objectLike()`. To configure different behavour, use other matchers in the `Match` class.
+   * @param type the resource type; ex: `AWS::S3::Bucket`
+   * @param props the 'Properties' section of the resource as should be expected in the template.
+   */
+  public allResourcesProperties(type: string, props: any): void {
+    const matchError = allResourcesProperties(this.template, type, props);
+    if (matchError) {
+      throw new Error(matchError);
+    }
+  }
+
   /**
    * Assert that a Parameter with the given properties exists in the CloudFormation template.
    * By default, performs partial matching on the parameter, via the `Match.objectLike()`.
diff --git a/packages/@aws-cdk/assertions/test/template.test.ts b/packages/@aws-cdk/assertions/test/template.test.ts
index 13354ca3614eb..7eb60db07a630 100644
--- a/packages/@aws-cdk/assertions/test/template.test.ts
+++ b/packages/@aws-cdk/assertions/test/template.test.ts
@@ -553,6 +553,174 @@ describe('Template', () => {
     });
   });
 
+  describe('allResources', () => {
+    test('all resource of type match', () => {
+      const stack = new Stack();
+      const partialProps = { baz: 'qux', fred: 'waldo' };
+      new CfnResource(stack, 'Foo', {
+        type: 'Foo::Bar',
+        properties: { ...partialProps, lorem: 'ipsum' },
+      });
+      new CfnResource(stack, 'Foo2', {
+        type: 'Foo::Bar',
+        properties: partialProps,
+      });
+
+      const inspect = Template.fromStack(stack);
+      expect(inspect.allResources('Foo::Bar', { Properties: partialProps }));
+    });
+
+    test('no resources match', (done) => {
+      const stack = new Stack();
+      new CfnResource(stack, 'Foo', {
+        type: 'Foo::Bar',
+        properties: { lorem: 'ipsum' },
+      });
+      new CfnResource(stack, 'Foo2', {
+        type: 'Foo::Bar',
+        properties: { baz: 'qux' },
+      });
+
+      const inspect = Template.fromStack(stack);
+      expectToThrow(
+        () => inspect.allResources('Foo::Bar', { Properties: { fred: 'waldo' } }),
+        [
+          'Template has 2 resource(s) with type Foo::Bar, but none match as expected.',
+          'The following resources do not match the given definition:',
+          /Foo/,
+          /Foo2/,
+        ],
+        done,
+      );
+      done();
+    });
+
+    test('some resources match', (done) => {
+      const stack = new Stack();
+      new CfnResource(stack, 'Foo', {
+        type: 'Foo::Bar',
+        properties: { lorem: 'ipsum' },
+      });
+      new CfnResource(stack, 'Foo2', {
+        type: 'Foo::Bar',
+        properties: { baz: 'qux' },
+      });
+
+      const inspect = Template.fromStack(stack);
+      expectToThrow(
+        () => inspect.allResources('Foo::Bar', { Properties: { lorem: 'ipsum' } }),
+        [
+          'Template has 2 resource(s) with type Foo::Bar, but only 1 match as expected.',
+          'The following resources do not match the given definition:',
+          /Foo2/,
+        ],
+        done,
+      );
+      done();
+    });
+
+    test('using a "not" matcher ', () => {
+      const stack = new Stack();
+      new CfnResource(stack, 'Foo', {
+        type: 'Foo::Bar',
+        properties: { lorem: 'ipsum' },
+      });
+      new CfnResource(stack, 'Foo2', {
+        type: 'Foo::Bar',
+        properties: { baz: 'baz' },
+      });
+
+      const inspect = Template.fromStack(stack);
+      expect(inspect.allResources('Foo::Bar', Match.not({ Properties: { baz: 'qux' } })));
+    });
+  });
+
+  describe('allResourcesProperties', () => {
+    test('all resource of type match', () => {
+      const stack = new Stack();
+      const partialProps = { baz: 'qux', fred: 'waldo' };
+      new CfnResource(stack, 'Foo', {
+        type: 'Foo::Bar',
+        properties: { ...partialProps, lorem: 'ipsum' },
+      });
+      new CfnResource(stack, 'Foo2', {
+        type: 'Foo::Bar',
+        properties: partialProps,
+      });
+
+      const inspect = Template.fromStack(stack);
+      expect(inspect.allResourcesProperties('Foo::Bar', partialProps));
+    });
+
+    test('no resources match', (done) => {
+      const stack = new Stack();
+      new CfnResource(stack, 'Foo', {
+        type: 'Foo::Bar',
+        properties: { lorem: 'ipsum' },
+      });
+      new CfnResource(stack, 'Foo2', {
+        type: 'Foo::Bar',
+        properties: { baz: 'qux' },
+      });
+      new CfnResource(stack, 'NotFoo', {
+        type: 'NotFoo::NotBar',
+        properties: { fred: 'waldo' },
+      });
+
+      const inspect = Template.fromStack(stack);
+      expectToThrow(
+        () => inspect.allResourcesProperties('Foo::Bar', { fred: 'waldo' }),
+        [
+          'Template has 2 resource(s) with type Foo::Bar, but none match as expected.',
+          'The following resources do not match the given definition:',
+          /Foo/,
+          /Foo2/,
+        ],
+        done,
+      );
+      done();
+    });
+
+    test('some resources match', (done) => {
+      const stack = new Stack();
+      new CfnResource(stack, 'Foo', {
+        type: 'Foo::Bar',
+        properties: { lorem: 'ipsum' },
+      });
+      new CfnResource(stack, 'Foo2', {
+        type: 'Foo::Bar',
+        properties: { baz: 'qux' },
+      });
+
+      const inspect = Template.fromStack(stack);
+      expectToThrow(
+        () => inspect.allResourcesProperties('Foo::Bar', { lorem: 'ipsum' }),
+        [
+          'Template has 2 resource(s) with type Foo::Bar, but only 1 match as expected.',
+          'The following resources do not match the given definition:',
+          /Foo2/,
+        ],
+        done,
+      );
+      done();
+    });
+
+    test('using a "not" matcher ', () => {
+      const stack = new Stack();
+      new CfnResource(stack, 'Foo', {
+        type: 'Foo::Bar',
+        properties: { lorem: 'ipsum' },
+      });
+      new CfnResource(stack, 'Foo2', {
+        type: 'Foo::Bar',
+        properties: { baz: 'baz' },
+      });
+
+      const inspect = Template.fromStack(stack);
+      expect(inspect.allResourcesProperties('Foo::Bar', Match.not({ baz: 'qux' })));
+    });
+  });
+
   describe('hasOutput', () => {
     test('matching', () => {
       const stack = new Stack();