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Disclosure - RESTRUCTURING link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - FAIR VALUE MEASUREMENT link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - PREFERRED STOCK link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - COMMON STOCK link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - STOCK INCENTIVE PLANS link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 9952172 - Disclosure - OTHER INCOME, NET link:presentationLink link:calculationLink link:definitionLink 9952173 - Disclosure - NET LOSS PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952174 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952175 - Disclosure - RELATED PARTY TRANSACTIONS link:presentationLink link:calculationLink link:definitionLink 9952176 - 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Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of Estimated Useful Lives Company' s Property and Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - BUSINESS COMBINATIONS - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - BUSINESS COMBINATIONS - Schedule of Purchase Price (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - BUSINESS COMBINATIONS - Schedule of Fair Values (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - BUSINESS COMBINATIONS - Schedule of Proforma (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - REVENUE RECOGNITION- Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - REVENUE RECOGNITION- Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - REVENUE RECOGNITION (Details) - Schedule of Revenues Under Each Performance (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - REVENUE RECOGNITION (Details) - Schedule of Disaggregates Revenue by Geographic Location (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - REVENUE RECOGNITION (Details) - Schedule of Revenue Recognition Pattern (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - REVENUE RECOGNITION (Details) - Schedule of Service (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - REVENUE RECOGNITION - Schedule of Contract Balance (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Schedule of Goodwill (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - GOODWILL AND INTANGIBLE ASSETS - Schedule of Future Amortization Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - PROPERTY AND EQUIPMENT, NET AND CAPITALIZED SOFTWARE DEVELOPMENT COST - Schedule of Property and Equipment, Net (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - PROPERTY AND EQUIPMENT, NET AND CAPITALIZED SOFTWARE DEVELOPMENT COST- Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - ACCRUED LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - COMMITMENTS AND CONTINGENCIES- Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - COMMITMENTS AND CONTINGENCIES - Schedule of Aggregate Non-cancelable Future Minimum Payments (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - WARRANTS (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - NOTE PAYABLE - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - RESTRUCTURING (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Financial Instruments Measured at Fair Value (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Fair Value, Liabilities Measured on Recurring Basis (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - FAIR VALUE MEASUREMENT - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Term Loan Common Stock Warrant (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Holdback Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - FAIR VALUE MEASUREMENT - Schedule of Earnout Liability (Details) link:presentationLink link:calculationLink link:definitionLink 9955557 - Disclosure - PREFERRED STOCK - Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955558 - Disclosure - COMMON STOCK - (Details) link:presentationLink link:calculationLink link:definitionLink 9955559 - Disclosure - STOCK INCENTIVE PLANS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955560 - Disclosure - STOCK INCENTIVE PLANS - Schedule of Stock Option Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955561 - Disclosure - STOCK INCENTIVE PLANS - Schedule of Assumptions (Details) link:presentationLink link:calculationLink link:definitionLink 9955562 - Disclosure - STOCK INCENTIVE PLANS - Schedule of Restricted Stock Unit Activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955563 - Disclosure - STOCK INCENTIVE PLANS - Schedule of Operations and Comprehensive Loss (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - LEASES- Schedule of Aggregate Noncancelable Future Minimum Lease Payments Under Operating and Finance Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955564 - Disclosure - LEASES- Schedule of Aggregate Noncancelable Future Minimum Lease Payments Under Operating and Finance Leases (Details) link:presentationLink link:calculationLink link:definitionLink 9955565 - Disclosure - LEASES - Schedule of Additional Information Related to the Company’s Lease (Details) link:presentationLink link:calculationLink link:definitionLink 9955566 - Disclosure - LEASES - Schedule of Weighted Average Remaining Lease Term and the Weighted Average Discount Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955567 - Disclosure - LEASES - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955568 - Disclosure - OTHER INCOME, NET (Details) link:presentationLink link:calculationLink link:definitionLink 9955569 - Disclosure - NET LOSS PER SHARE - Schedule of Calculation of Basic and Diluted Net Loss Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955570 - Disclosure - NET LOSS PER SHARE - Schedule of Outstanding Shares of Potentially Dilutive Securities (Details) link:presentationLink link:calculationLink link:definitionLink 9955571 - Disclosure - NET LOSS PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955572 - Disclosure - INCOME TAXES - Schedule of Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955573 - Disclosure - INCOME TAXES- Narratives (Details) link:presentationLink link:calculationLink link:definitionLink 9955574 - Disclosure - INCOME TAXES - Schedule of Effective Tax Rate (Details) link:presentationLink link:calculationLink link:definitionLink 9955575 - Disclosure - INCOME TAXES- Schedule of Net Deferred Tax Assets and Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955576 - Disclosure - INCOME TAXES - Schedule of Unrecognized Tax Benefits (Details) link:presentationLink link:calculationLink link:definitionLink 9955577 - Disclosure - INCOME TAXES - Schedule of Income Taxes Paid (Details) link:presentationLink link:calculationLink link:definitionLink 9955578 - Disclosure - RELATED PARTY TRANSACTIONS (Details) link:presentationLink link:calculationLink link:definitionLink 9955579 - Disclosure - SEGMENT INFORMATION (Details) link:presentationLink link:calculationLink link:definitionLink 9955580 - 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