diff --git a/dist/index.js b/dist/index.js
index 312a325..3ea158e 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -7719,8 +7719,8 @@ class ArtifactHttpClient {
     // JSON generated client.
     request(service, method, contentType, data) {
         return __awaiter(this, void 0, void 0, function* () {
-            const url = `${this.baseUrl}/twirp/${service}/${method}`;
-            (0, core_1.debug)(`Requesting ${url}`);
+            const url = new URL(`/twirp/${service}/${method}`, this.baseUrl).href;
+            (0, core_1.debug)(`Requesting: ${url}`);
             const headers = {
                 'Content-Type': contentType
             };
@@ -7813,12 +7813,16 @@ exports.createArtifactTwirpClient = createArtifactTwirpClient;
 /***/ }),
 
 /***/ 95042:
-/***/ ((__unused_webpack_module, exports) => {
+/***/ (function(__unused_webpack_module, exports, __nccwpck_require__) {
 
 "use strict";
 
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.getGitHubWorkspaceDir = exports.isGhes = exports.getResultsServiceUrl = exports.getRuntimeToken = exports.getUploadChunkSize = void 0;
+exports.getConcurrency = exports.getGitHubWorkspaceDir = exports.isGhes = exports.getResultsServiceUrl = exports.getRuntimeToken = exports.getUploadChunkSize = void 0;
+const os_1 = __importDefault(__nccwpck_require__(22037));
 // Used for controlling the highWaterMark value of the zip that is being streamed
 // The same value is used as the chunk size that is use during upload to blob storage
 function getUploadChunkSize() {
@@ -7838,7 +7842,7 @@ function getResultsServiceUrl() {
     if (!resultsUrl) {
         throw new Error('Unable to get the ACTIONS_RESULTS_URL env variable');
     }
-    return resultsUrl;
+    return new URL(resultsUrl).origin;
 }
 exports.getResultsServiceUrl = getResultsServiceUrl;
 function isGhes() {
@@ -7854,6 +7858,18 @@ function getGitHubWorkspaceDir() {
     return ghWorkspaceDir;
 }
 exports.getGitHubWorkspaceDir = getGitHubWorkspaceDir;
+// Mimics behavior of azcopy: https://learn.microsoft.com/en-us/azure/storage/common/storage-use-azcopy-optimize
+// If your machine has fewer than 5 CPUs, then the value of this variable is set to 32.
+// Otherwise, the default value is equal to 16 multiplied by the number of CPUs. The maximum value of this variable is 300.
+function getConcurrency() {
+    const numCPUs = os_1.default.cpus().length;
+    if (numCPUs <= 4) {
+        return 32;
+    }
+    const concurrency = 16 * numCPUs;
+    return concurrency > 300 ? 300 : concurrency;
+}
+exports.getConcurrency = getConcurrency;
 //# sourceMappingURL=config.js.map
 
 /***/ }),
@@ -7996,11 +8012,11 @@ const stream = __importStar(__nccwpck_require__(12781));
 function uploadZipToBlobStorage(authenticatedUploadURL, zipUploadStream) {
     return __awaiter(this, void 0, void 0, function* () {
         let uploadByteCount = 0;
-        const maxBuffers = 5;
+        const maxConcurrency = (0, config_1.getConcurrency)();
         const bufferSize = (0, config_1.getUploadChunkSize)();
         const blobClient = new storage_blob_1.BlobClient(authenticatedUploadURL);
         const blockBlobClient = blobClient.getBlockBlobClient();
-        core.debug(`Uploading artifact zip to blob storage with maxBuffers: ${maxBuffers}, bufferSize: ${bufferSize}`);
+        core.debug(`Uploading artifact zip to blob storage with maxConcurrency: ${maxConcurrency}, bufferSize: ${bufferSize}`);
         const uploadCallback = (progress) => {
             core.info(`Uploaded bytes ${progress.loadedBytes}`);
             uploadByteCount = progress.loadedBytes;
@@ -8016,7 +8032,7 @@ function uploadZipToBlobStorage(authenticatedUploadURL, zipUploadStream) {
         zipUploadStream.pipe(hashStream).setEncoding('hex'); // This stream is used to compute a hash of the zip content that gets used. Integrity check
         try {
             core.info('Beginning upload of artifact content to blob storage');
-            yield blockBlobClient.uploadStream(uploadStream, bufferSize, maxBuffers, options);
+            yield blockBlobClient.uploadStream(uploadStream, bufferSize, maxConcurrency, options);
             core.info('Finished uploading artifact content to blob storage!');
             hashStream.end();
             sha256Hash = hashStream.read();
@@ -8240,7 +8256,7 @@ function uploadArtifact(name, files, rootDirectory, options) {
                 success: false
             };
         }
-        const zipUploadStream = yield (0, zip_1.createZipUploadStream)(zipSpecification);
+        const zipUploadStream = yield (0, zip_1.createZipUploadStream)(zipSpecification, options === null || options === void 0 ? void 0 : options.compressionLevel);
         // get the IDs needed for the artifact creation
         const backendIds = (0, util_1.getBackendIdsFromToken)();
         if (!backendIds.workflowRunBackendId || !backendIds.workflowJobRunBackendId) {
@@ -8471,12 +8487,13 @@ var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, ge
     });
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.createZipUploadStream = exports.ZipUploadStream = void 0;
+exports.createZipUploadStream = exports.ZipUploadStream = exports.DEFAULT_COMPRESSION_LEVEL = void 0;
 const stream = __importStar(__nccwpck_require__(12781));
 const archiver = __importStar(__nccwpck_require__(71160));
 const core = __importStar(__nccwpck_require__(66526));
 const fs_1 = __nccwpck_require__(57147);
 const config_1 = __nccwpck_require__(95042);
+exports.DEFAULT_COMPRESSION_LEVEL = 6;
 // Custom stream transformer so we can set the highWaterMark property
 // See https://github.com/nodejs/node/issues/8855
 class ZipUploadStream extends stream.Transform {
@@ -8491,14 +8508,12 @@ class ZipUploadStream extends stream.Transform {
     }
 }
 exports.ZipUploadStream = ZipUploadStream;
-function createZipUploadStream(uploadSpecification) {
+function createZipUploadStream(uploadSpecification, compressionLevel = exports.DEFAULT_COMPRESSION_LEVEL) {
     return __awaiter(this, void 0, void 0, function* () {
+        core.debug(`Creating Artifact archive with compressionLevel: ${compressionLevel}`);
         const zip = archiver.create('zip', {
-            zlib: { level: 9 } // Sets the compression level.
-            // Available options are 0-9
-            // 0 => no compression
-            // 1 => fastest with low compression
-            // 9 => highest compression ratio but the slowest
+            highWaterMark: (0, config_1.getUploadChunkSize)(),
+            zlib: { level: compressionLevel }
         });
         // register callbacks for various events during the zip lifecycle
         zip.on('error', zipErrorCallback);