diff --git a/extensions/mssql/src/contracts.ts b/extensions/mssql/src/contracts.ts
index 62c93a80bf..5ada2f59da 100644
--- a/extensions/mssql/src/contracts.ts
+++ b/extensions/mssql/src/contracts.ts
@@ -1123,7 +1123,16 @@ export interface GetExecutionPlanParams {
 }
 
 export namespace GetExecutionPlanRequest {
-	export const type = new RequestType<GetExecutionPlanParams, azdata.executionPlan.GetExecutionPlanResult, void, void>('queryexecutionplan/getexecutionplan');
+	export const type = new RequestType<GetExecutionPlanParams, azdata.executionPlan.GetExecutionPlanResult, void, void>('queryExecutionPlan/getExecutionPlan');
+}
+
+export interface ExecutionPlanComparisonParams {
+	firstExecutionPlanGraphInfo: azdata.executionPlan.ExecutionPlanGraphInfo;
+	secondExecutionPlanGraphInfo: azdata.executionPlan.ExecutionPlanGraphInfo;
+}
+
+export namespace ExecutionPlanComparisonRequest {
+	export const type = new RequestType<ExecutionPlanComparisonParams, azdata.executionPlan.ExecutionPlanComparisonResult, void, void>('queryExecutionPlan/compareExecutionPlanGraph');
 }
 
 // ------------------------------- < Execution Plan > ------------------------------------
diff --git a/extensions/mssql/src/features.ts b/extensions/mssql/src/features.ts
index e1be7c8f6d..fa4feb46ed 100644
--- a/extensions/mssql/src/features.ts
+++ b/extensions/mssql/src/features.ts
@@ -1221,10 +1221,25 @@ export class ExecutionPlanServiceFeature extends SqlOpsFeature<undefined> {
 			);
 		};
 
+		const compareExecutionPlanGraph = (firstPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo, secondPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo): Thenable<azdata.executionPlan.ExecutionPlanComparisonResult> => {
+			const params: contracts.ExecutionPlanComparisonParams = {
+				firstExecutionPlanGraphInfo: firstPlanFile,
+				secondExecutionPlanGraphInfo: secondPlanFile
+			};
+
+			return client.sendRequest(contracts.ExecutionPlanComparisonRequest.type, params).then(
+				r => r,
+				e => {
+					client.logFailedRequest(contracts.ExecutionPlanComparisonRequest.type, e);
+					return Promise.reject(e);
+				}
+			);
+		};
+
 		return azdata.dataprotocol.registerExecutionPlanProvider({
 			providerId: client.providerId,
-			getExecutionPlan
+			getExecutionPlan,
+			compareExecutionPlanGraph
 		});
 	}
 }
-
diff --git a/src/sql/azdata.proposed.d.ts b/src/sql/azdata.proposed.d.ts
index b3c2f1abbd..c2d9ace749 100644
--- a/src/sql/azdata.proposed.d.ts
+++ b/src/sql/azdata.proposed.d.ts
@@ -1268,6 +1268,38 @@ declare module 'azdata' {
 			graphs: ExecutionPlanGraph[]
 		}
 
+		export interface ExecutionGraphComparisonResult {
+			/**
+			 * The base ExecutionPlanNode for the ExecutionGraphComparisonResult.
+			 */
+			baseNode: ExecutionPlanNode;
+			/**
+			 * The children of the ExecutionGraphComparisonResult.
+			 */
+			children: ExecutionGraphComparisonResult[];
+			/**
+			 * The group index of the ExecutionGraphComparisonResult.
+			 */
+			groupIndex: number;
+			/**
+			 * Flag to indicate if the ExecutionGraphComparisonResult has a matching node in the compared execution plan.
+			 */
+			hasMatch: boolean;
+			/**
+			 * List of matching nodes for the ExecutionGraphComparisonResult.
+			 */
+			matchingNodes: ExecutionGraphComparisonResult[];
+			/**
+			 * The parent of the ExecutionGraphComparisonResult.
+			 */
+			parentNode: ExecutionGraphComparisonResult;
+		}
+
+		export interface ExecutionPlanComparisonResult extends ResultStatus {
+			firstComparisonResult: ExecutionGraphComparisonResult;
+			secondComparisonResult: ExecutionGraphComparisonResult;
+		}
+
 		export interface ExecutionPlanProvider extends DataProvider {
 			// execution plan service methods
 
@@ -1276,6 +1308,12 @@ declare module 'azdata' {
 			 * @param planFile file that contains the execution plan
 			 */
 			getExecutionPlan(planFile: ExecutionPlanGraphInfo): Thenable<GetExecutionPlanResult>;
+			/**
+			 * Compares two execution plans and identifies matching regions in both execution plans.
+			 * @param firstPlanFile file that contains the first execution plan.
+			 * @param secondPlanFile file that contains the second execution plan.
+			 */
+			compareExecutionPlanGraph(firstPlanFile: ExecutionPlanGraphInfo, secondPlanFile: ExecutionPlanGraphInfo): Thenable<ExecutionPlanComparisonResult>;
 		}
 	}
 
diff --git a/src/sql/workbench/api/common/extHostDataProtocol.ts b/src/sql/workbench/api/common/extHostDataProtocol.ts
index 61115b053e..2e6bbfb1f3 100644
--- a/src/sql/workbench/api/common/extHostDataProtocol.ts
+++ b/src/sql/workbench/api/common/extHostDataProtocol.ts
@@ -933,4 +933,8 @@ export class ExtHostDataProtocol extends ExtHostDataProtocolShape {
 	public override $getExecutionPlan(handle: number, planFile: azdata.executionPlan.ExecutionPlanGraphInfo): Thenable<azdata.executionPlan.GetExecutionPlanResult> {
 		return this._resolveProvider<azdata.executionPlan.ExecutionPlanProvider>(handle).getExecutionPlan(planFile);
 	}
+
+	public override $compareExecutionPlanGraph(handle: number, firstPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo, secondPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo): Thenable<azdata.executionPlan.ExecutionPlanComparisonResult> {
+		return this._resolveProvider<azdata.executionPlan.ExecutionPlanProvider>(handle).compareExecutionPlanGraph(firstPlanFile, secondPlanFile);
+	}
 }
diff --git a/src/sql/workbench/api/common/sqlExtHost.protocol.ts b/src/sql/workbench/api/common/sqlExtHost.protocol.ts
index 16031ad236..57272b5ef9 100644
--- a/src/sql/workbench/api/common/sqlExtHost.protocol.ts
+++ b/src/sql/workbench/api/common/sqlExtHost.protocol.ts
@@ -572,6 +572,10 @@ export abstract class ExtHostDataProtocolShape {
 	 * Gets the generic execution plan graph for a plan file.
 	 */
 	$getExecutionPlan(handle: number, planFile: azdata.executionPlan.ExecutionPlanGraphInfo): Thenable<azdata.executionPlan.GetExecutionPlanResult> { throw ni(); }
+	/**
+	 * Compares two execution plans and identifies matching sections in both.
+	 */
+	$compareExecutionPlanGraph(handle: number, firstPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo, secondPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo): Thenable<azdata.executionPlan.ExecutionPlanComparisonResult> { throw ni(); }
 }
 
 /**
diff --git a/src/sql/workbench/services/executionPlan/common/executionPlanService.ts b/src/sql/workbench/services/executionPlan/common/executionPlanService.ts
index 6f09f6b69d..6b29d4eb7b 100644
--- a/src/sql/workbench/services/executionPlan/common/executionPlanService.ts
+++ b/src/sql/workbench/services/executionPlan/common/executionPlanService.ts
@@ -123,6 +123,12 @@ export class ExecutionPlanService implements IExecutionPlanService {
 		});
 	}
 
+	compareExecutionPlanGraph(firstPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo, secondPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo): Promise<azdata.executionPlan.ExecutionPlanComparisonResult> {
+		return this._runAction(firstPlanFile.graphFileType, (runner) => {
+			return runner.compareExecutionPlanGraph(firstPlanFile, secondPlanFile);
+		});
+	}
+
 	getSupportedExecutionPlanExtensionsForProvider(providerId: string): string[] | undefined {
 		return this._capabilitiesService.getCapabilities(providerId).connection.supportedExecutionPlanFileExtensions;
 	}
diff --git a/src/sql/workbench/services/executionPlan/common/interfaces.ts b/src/sql/workbench/services/executionPlan/common/interfaces.ts
index 332187f036..1517353017 100644
--- a/src/sql/workbench/services/executionPlan/common/interfaces.ts
+++ b/src/sql/workbench/services/executionPlan/common/interfaces.ts
@@ -22,6 +22,12 @@ export interface IExecutionPlanService {
 	 * Gets an execution plan for the given planFile.
 	 */
 	getExecutionPlan(planFile: azdata.executionPlan.ExecutionPlanGraphInfo): Promise<azdata.executionPlan.GetExecutionPlanResult>;
+	/**
+	 * Compares two execution plans and identifies matching regions in both execution plans.
+	 * @param firstPlanFile file that contains the first execution plan.
+	 * @param secondPlanFile file that contains the second execution plan.
+	 */
+	compareExecutionPlanGraph(firstPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo, secondPlanFile: azdata.executionPlan.ExecutionPlanGraphInfo): Promise<azdata.executionPlan.ExecutionPlanComparisonResult>;
 
 	/**
 	 * Get execution plan file extensions supported by the provider.