0000001 - Document - Cover Page link:presentationLink link:calculationLink link:definitionLink 0000002 - Document - Audit Information link:presentationLink link:calculationLink link:definitionLink 0000003 - Statement - CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 0000004 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000005 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 0000006 - Statement - CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY link:presentationLink link:calculationLink link:definitionLink 0000007 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 0000008 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 0000009 - Disclosure - DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION link:presentationLink link:calculationLink link:definitionLink 0000010 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 0000011 - Disclosure - ACQUISITION link:presentationLink link:calculationLink link:definitionLink 0000012 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 0000013 - Disclosure - PROPERTY and EQUIPMENT, net link:presentationLink link:calculationLink link:definitionLink 0000014 - Disclosure - INTANGIBLE ASSETS AND GOODWILL link:presentationLink link:calculationLink link:definitionLink 0000015 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 0000016 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 0000017 - Disclosure - CONVERTIBLE PREFERRED STOCK link:presentationLink link:calculationLink link:definitionLink 0000018 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 0000019 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 0000020 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES link:presentationLink link:calculationLink link:definitionLink 0000021 - Disclosure - EMPLOYEE BENEFIT PLAN link:presentationLink link:calculationLink link:definitionLink 0000022 - Disclosure - LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 0000023 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 0000024 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 0000025 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 0000026 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 0000027 - Disclosure - PROPERTY and EQUIPMENT, net (Tables) link:presentationLink link:calculationLink link:definitionLink 0000028 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables) link:presentationLink link:calculationLink link:definitionLink 0000029 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 0000030 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 0000031 - Disclosure - CONVERTIBLE PREFERRED STOCK (Tables) link:presentationLink link:calculationLink link:definitionLink 0000032 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 0000033 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 0000034 - Disclosure - LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 0000035 - Disclosure - DESCRIPTION OF THE BUSINESS AND BASIS OF PRESENTATION (Details) link:presentationLink link:calculationLink link:definitionLink 0000036 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Cash and Cash Equivalents (Details) link:presentationLink link:calculationLink link:definitionLink 0000037 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000038 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Useful Life (Details) link:presentationLink link:calculationLink link:definitionLink 0000039 - Disclosure - ACQUISITION (Details) link:presentationLink link:calculationLink link:definitionLink 0000040 - Disclosure - REVENUE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000041 - Disclosure - REVENUE - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 0000042 - Disclosure - REVENUE - Revenue by Geographic Area (Details) link:presentationLink link:calculationLink link:definitionLink 0000043 - Disclosure - REVENUE - Deferred Revenue Rollforward (Details) link:presentationLink link:calculationLink link:definitionLink 0000044 - Disclosure - PROPERTY and EQUIPMENT, net - Summary (Details) link:presentationLink link:calculationLink link:definitionLink 0000045 - Disclosure - PROPERTY and EQUIPMENT, net - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000046 - Disclosure - PROPERTY and EQUIPMENT, net - Summary of Depreciation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 0000047 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Capitalized Software (Details) link:presentationLink link:calculationLink link:definitionLink 0000048 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000049 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Schedule of Capitalized Software Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 0000050 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Schedule of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 0000051 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000052 - Disclosure - LEASES - Components of Lease Cost (Details) link:presentationLink link:calculationLink link:definitionLink 0000053 - Disclosure - LEASES - Future Minimum Rental Payment (Details) link:presentationLink link:calculationLink link:definitionLink 0000053 - Disclosure - LEASES - Future Minimum Rental Payment (Details) link:presentationLink link:calculationLink link:definitionLink 0000054 - Disclosure - INCOME TAXES - Provision of Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 0000055 - Disclosure - INCOME TAXES - Effective Income Tax Rate Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 0000056 - Disclosure - INCOME TAXES - Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 0000057 - Disclosure - INCOME TAXES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000058 - Disclosure - INCOME TAXES - Valuation Allowance (Details) link:presentationLink link:calculationLink link:definitionLink 0000059 - Disclosure - CONVERTIBLE PREFERRED STOCK - Schedule of Convertible Preferred Stock (Details) link:presentationLink link:calculationLink link:definitionLink 0000060 - Disclosure - CONVERTIBLE PREFERRED STOCK - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000061 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000062 - Disclosure - STOCK-BASED COMPENSATION - Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 0000063 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Payment Pricing Model (Details) link:presentationLink link:calculationLink link:definitionLink 0000064 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Restricted Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 0000065 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Payment Award (Details) link:presentationLink link:calculationLink link:definitionLink 0000066 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Weighted Average Pricing Model (Details) link:presentationLink link:calculationLink link:definitionLink 0000067 - Disclosure - STOCK-BASED COMPENSATION - Schedule of Income Statement Location for Compensation Expense (Details) link:presentationLink link:calculationLink link:definitionLink 0000068 - Disclosure - ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 0000069 - Disclosure - EMPLOYEE BENEFIT PLAN (Details) link:presentationLink link:calculationLink link:definitionLink 0000070 - Disclosure - LOSS PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) link:presentationLink link:calculationLink link:definitionLink 0000071 - Disclosure - LOSS PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 0000072 - Disclosure - LOSS PER SHARE - Schedule of Antidilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink