0001001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - Condensed Consolidated Statements of Loss and Comprehensive Loss link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 2402401 - Disclosure - DESCRIPTION OF BUSINESS (Details) link:presentationLink link:calculationLink link:definitionLink 2103102 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2204201 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 2305301 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2406402 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounts Receivable Concentration Risk (Details) link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Concentration Risk (Details) link:presentationLink link:calculationLink link:definitionLink 2108103 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 2309302 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 2410404 - Disclosure - REVENUE - Disaggregation of Revenue (Details) link:presentationLink link:calculationLink link:definitionLink 2411405 - Disclosure - REVENUE - Contract Balances on Condensed Consolidated Balance Sheet (Details) link:presentationLink link:calculationLink link:definitionLink 2412406 - Disclosure - REVENUE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2412406 - Disclosure - REVENUE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2413407 - Disclosure - REVENUE - Capitalized Direct Commission Costs (Details) link:presentationLink link:calculationLink link:definitionLink 2114104 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 2315303 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 2416408 - Disclosure - NET LOSS PER SHARE - Schedule of Net Loss Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2417409 - Disclosure - NET LOSS PER SHARE - Schedule of Potentially Dilutive Securities Excluded from the Calculation of Diluted Earnings Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 2118105 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 2419410 - Disclosure - FAIR VALUE MEASUREMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 2120106 - Disclosure - INTANGIBLE ASSETS AND GOODWILL link:presentationLink link:calculationLink link:definitionLink 2321304 - Disclosure - INTANGIBLE ASSETS AND GOODWILL (Tables) link:presentationLink link:calculationLink link:definitionLink 2422411 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Schedule of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 2423412 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2424413 - Disclosure - INTANGIBLE ASSETS AND GOODWILL - Schedule of Future Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 2125107 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 2326305 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 2427414 - Disclosure - LEASES - Operating Lease Costs (Details) link:presentationLink link:calculationLink link:definitionLink 2428415 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2429416 - Disclosure - LEASES - Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2429416 - Disclosure - LEASES - Maturities of Operating Lease Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 2130108 - Disclosure - BORROWINGS link:presentationLink link:calculationLink link:definitionLink 2331306 - Disclosure - BORROWINGS (Tables) link:presentationLink link:calculationLink link:definitionLink 2432417 - Disclosure - BORROWINGS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2433418 - Disclosure - BORROWINGS - Schedule of Vendor Financing Arrangements (Details) link:presentationLink link:calculationLink link:definitionLink 2433418 - Disclosure - BORROWINGS - Schedule of Vendor Financing Arrangements (Details) link:presentationLink link:calculationLink link:definitionLink 2134109 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2135110 - Disclosure - REDEEMABLE CONVERTIBLE PREFERRED STOCK, PREFERRED STOCK AND COMMON STOCK link:presentationLink link:calculationLink link:definitionLink 2436419 - Disclosure - REDEEMABLE CONVERTIBLE PREFERRED STOCK, PREFERRED STOCK AND COMMON STOCK (Details) link:presentationLink link:calculationLink link:definitionLink 2137111 - Disclosure - STOCK-BASED COMPENSATION link:presentationLink link:calculationLink link:definitionLink 2338307 - Disclosure - STOCK-BASED COMPENSATION (Tables) link:presentationLink link:calculationLink link:definitionLink 2439420 - Disclosure - STOCK-BASED COMPENSATION - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 2440421 - Disclosure - STOCK-BASED COMPENSATION - Shares Available for Future Grant (Details) link:presentationLink link:calculationLink link:definitionLink 2441422 - Disclosure - STOCK-BASED COMPENSATION - Summary of Stock Options Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2442423 - Disclosure - STOCK-BASED COMPENSATION - Summary of Restricted Stock Units Activity (Details) link:presentationLink link:calculationLink link:definitionLink 2443424 - Disclosure - STOCK-BASED COMPENSATION - Stock-Based Compensation Related to Stock-Based Awards to Employees (Details) link:presentationLink link:calculationLink link:definitionLink 2144112 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2445425 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 2146113 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 2447426 - Disclosure - RELATED PARTY TRANSACTIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2148114 - Disclosure - SUBSEQUENT EVENTS link:presentationLink link:calculationLink link:definitionLink 2449427 - Disclosure - SUBSEQUENT EVENTS (Details) link:presentationLink link:calculationLink link:definitionLink