0001001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - UNADUDITED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' DEFECIT link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - UNADUDITED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' DEFECIT (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1006007 - Statement - UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION link:presentationLink link:calculationLink link:definitionLink 2102102 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2203201 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 2304301 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2405401 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Cash and Cash Equivalents (Details) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2107103 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 2308302 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 2409403 - Disclosure - REVENUE - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 2410404 - Disclosure - REVENUE - Deferred Revenue Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 2111104 - Disclosure - PROPERTY and EQUIPMENT, net link:presentationLink link:calculationLink link:definitionLink 2312303 - Disclosure - PROPERTY and EQUIPMENT, net (Tables) link:presentationLink link:calculationLink link:definitionLink 2413405 - Disclosure - PROPERTY and EQUIPMENT, net (Details) link:presentationLink link:calculationLink link:definitionLink 2114105 - Disclosure - CAPITALIZED SOFTWARE, net link:presentationLink link:calculationLink link:definitionLink 2315304 - Disclosure - Intangible Assets, Goodwill and Other (Tables) link:presentationLink link:calculationLink link:definitionLink 2416406 - Disclosure - CAPITALIZED SOFTWARE, net - Capitalized Software (Details) link:presentationLink link:calculationLink link:definitionLink 2417407 - Disclosure - CAPITALIZED SOFTWARE, net - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2418408 - Disclosure - CAPITALIZED SOFTWARE, net - Schedule of Capitalized Software Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2119106 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2420409 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 2121107 - Disclosure - CONVERTIBLE PREFERRED STOCK link:presentationLink link:calculationLink link:definitionLink 2322305 - Disclosure - CONVERTIBLE PREFERRED STOCK (Tables) link:presentationLink link:calculationLink link:definitionLink 2423410 - Disclosure - CONVERTIBLE PREFERRED STOCK - Schedule of Convertible Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 2424411 - Disclosure - CONVERTIBLE PREFERRED STOCK - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2125108 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 2326306 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2427412 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2428413 - Disclosure - STOCK-BASED COMPENSATION - Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2429414 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Restricted Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2430415 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Income Statement Location for Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2131109 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2132110 - Disclosure - ACCRUED EXPENSES AND OTHER LIABILITIES link:presentationLink link:calculationLink link:definitionLink 2333307 - Disclosure - ACCRUED EXPENSES AND OTHER LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2434416 - Disclosure - ACCRUED EXPENSES AND OTHER LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 2135111 - Disclosure - EMPLOYEE BENEFIT PLAN link:presentationLink link:calculationLink link:definitionLink 2436417 - Disclosure - EMPLOYEE BENEFIT PLAN (Details) link:presentationLink link:calculationLink link:definitionLink 2137112 - Disclosure - EARNINGS PER SHARE link:presentationLink link:calculationLink link:definitionLink 2338308 - Disclosure - EARNINGS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 2439418 - Disclosure - EARNINGS PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink 2440419 - Disclosure - EARNINGS PER SHARE - Schedule of Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 2141113 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 2442420 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink