0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT) link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - ORGANIZATION link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - BUSINESS COMBINATIONS link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - REVENUE RECOGNITION link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - GOODWILL AND INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - ACCRUED LIABILITIES link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - WARRANTS link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - NOTE PAYABLE link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - RESTRUCTURING link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - PREFERRED STOCK link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - COMMON STOCK link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - STOCK INCENTIVE PLANS link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - OTHER INCOME (EXPENSE), NET link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - SUBSEQUENT EVENT link:presentationLink link:calculationLink link:definitionLink 9954471 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 9954472 - Disclosure - BUSINESS COMBINATIONS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954473 - Disclosure - REVENUE RECOGNITION (Tables) link:presentationLink link:calculationLink link:definitionLink 9954474 - Disclosure - GOODWILL AND INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954475 - Disclosure - ACCRUED LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954476 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954477 - Disclosure - NOTE PAYABLE (Tables) link:presentationLink link:calculationLink link:definitionLink 9954478 - Disclosure - STOCK INCENTIVE PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954479 - Disclosure - OTHER INCOME (EXPENSE), NET (Tables) link:presentationLink link:calculationLink link:definitionLink 9954480 - Disclosure - NET LOSS PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9954481 - Disclosure - INCOME TAXES (Tables) link:presentationLink link:calculationLink link:definitionLink 9954482 - Disclosure - FAIR VALUE MEASUREMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 9954483 - Disclosure - ORGANIZATION (Details) link:presentationLink link:calculationLink link:definitionLink 9954484 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) link:presentationLink link:calculationLink link:definitionLink 9954485 - Disclosure - BUSINESS COMBINATIONS - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9954486 - Disclosure - BUSINESS COMBINATIONS - Schedule of Purchase Price (Details) link:presentationLink link:calculationLink link:definitionLink 9954487 - Disclosure - BUSINESS COMBINATIONS - Schedule of Preliminary Fair Values (Details) link:presentationLink link:calculationLink link:definitionLink 9954488 - Disclosure - BUSINESS COMBINATIONS - Schedule of Proforma (Details) link:presentationLink link:calculationLink link:definitionLink 9954489 - Disclosure - REVENUE RECOGNITION - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9954489 - Disclosure - REVENUE RECOGNITION - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9954490 - Disclosure - REVENUE RECOGNITION - Schedule of revenues under each performance (Details) link:presentationLink link:calculationLink link:definitionLink 9954491 - Disclosure - REVENUE RECOGNITION - Schedule of disaggregates revenue by geographic location (Details) link:presentationLink link:calculationLink link:definitionLink 9954492 - Disclosure - REVENUE RECOGNITION - Schedule of revenue recognition pattern (Details) link:presentationLink link:calculationLink link:definitionLink 9954493 - Disclosure - REVENUE RECOGNITION - Schedule of Service (Details) link:presentationLink link:calculationLink link:definitionLink 9954494 - Disclosure - REVENUE RECOGNITION - Schedule of Contract Balance (Details) link:presentationLink link:calculationLink link:definitionLink 9954495 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9954496 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9954497 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954498 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Future Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9954499 - Disclosure - ACCRUED LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 9954500 - Disclosure - COMMITMENTS AND CONTINGENCIES - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9954501 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of aggregate noncancelable future minimum payments (Details) link:presentationLink link:calculationLink link:definitionLink 9954502 - Disclosure - WARRANTS (Details) link:presentationLink link:calculationLink link:definitionLink 9954503 - Disclosure - NOTE PAYABLE - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9954504 - Disclosure - NOTE PAYABLE - Schedule of convertible notes, debt balances (Details) link:presentationLink link:calculationLink link:definitionLink 9954505 - Disclosure - RESTRUCTURING (Details) link:presentationLink link:calculationLink link:definitionLink 9954506 - Disclosure - PREFERRED STOCK (Details) link:presentationLink link:calculationLink link:definitionLink 9954507 - Disclosure - COMMON STOCK (Details) link:presentationLink link:calculationLink link:definitionLink 9954508 - Disclosure - STOCK INCENTIVE PLANS - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9954509 - Disclosure - STOCK INCENTIVE PLANS - Schedule of Performance Conditions (Details) link:presentationLink link:calculationLink link:definitionLink 9954510 - Disclosure - STOCK INCENTIVE PLANS - Schedule of operations and comprehensive loss (Details) link:presentationLink link:calculationLink link:definitionLink 9954511 - Disclosure - OTHER INCOME (EXPENSE), NET - Schedule of other income (expense), net (Details) link:presentationLink link:calculationLink link:definitionLink 9954512 - Disclosure - NET LOSS PER SHARE - Schedule of calculation of basic and diluted net loss per share attributable to common stockholders (Details) link:presentationLink link:calculationLink link:definitionLink 9954513 - Disclosure - NET LOSS PER SHARE - Schedule of outstanding shares of potentially dilutive securities (Details) link:presentationLink link:calculationLink link:definitionLink 9954514 - Disclosure - NET LOSS PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954515 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 9954516 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of financial instruments that are measured or disclosed at fair value (Details) link:presentationLink link:calculationLink link:definitionLink 9954517 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of earnout consideration measured at fair value (Details) link:presentationLink link:calculationLink link:definitionLink 9954518 - Disclosure - FAIR VALUE MEASUREMENTS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9954519 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Holdback Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9954520 - Disclosure - FAIR VALUE MEASUREMENTS - Schedule of Earnout Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9954521 - Disclosure - SUBSEQUENT EVENT (Details) link:presentationLink link:calculationLink link:definitionLink