Global Digital Assurance Market Size, Share and Analysis Report By Testing Type (Performance and Usability Testing, Security Testing), By Testing Mode (Manual Testing Deployment, Test Automation Deployment), By Service Model (Consulting and Advisory, Managed Testing Services), By Organisation Size (Small and Mid‑sized Enterprises, Large Enterprises), By End‑user Vertical (Government, Banking, Financial Services and Insurance), By Regional Analysis, Global Trends and Opportunity, Future Outlook By 2026-2035