1 Report Business Overview 1.1 Study Scope 1.2 Market Analysis by Type 1.2.1 Global Voice User Interface Market Size Growth Rate by Type, 2017 VS 2021 VS 2028 1.2.2 Solution 1.2.3 Service 1.3 Market by Application 1.3.1 Global Voice User Interface Market Size Growth Rate by Application, 2017 VS 2021 VS 2028 1.3.2 BFSI 1.3.3 Retail & E-commerce 1.3.4 Consumer Electronic 1.3.5 Automotive 1.3.6 Others 1.4 Study Objectives 1.5 Years Considered 2 Global Growth Trends 2.1 Global Voice User Interface Market Perspective (2017-2028) 2.2 Voice User Interface Growth Trends by Region 2.2.1 Voice User Interface Market Size by Region: 2017 VS 2021 VS 2028 2.2.2 Voice User Interface Historic Market Size by Region (2017-2022) 2.2.3 Voice User Interface Forecasted Market Size by Region (2023-2028) 2.3 Voice User Interface Market Dynamics 2.3.1 Voice User Interface Industry Trends 2.3.2 Voice User Interface Market Drivers 2.3.3 Voice User Interface Market Challenges 2.3.4 Voice User Interface Market Restraints 3 Competition Landscape by Key Players 3.1 Global Top Voice User Interface Players by Revenue 3.1.1 Global Top Voice User Interface Players by Revenue (2017-2022) 3.1.2 Global Voice User Interface Revenue Market Share by Players (2017-2022) 3.2 Global Voice User Interface Market Share by Company Type (Tier 1, Tier 2, and Tier 3) 3.3 Players Covered: Ranking by Voice User Interface Revenue 3.4 Global Voice User Interface Market Concentration Ratio 3.4.1 Global Voice User Interface Market Concentration Ratio (CR5 and HHI) 3.4.2 Global Top 10 and Top 5 Companies by Voice User Interface Revenue in 2021 3.5 Voice User Interface Key Players Head office and Area Served 3.6 Key Players Voice User Interface Product Solution and Service 3.7 Date of Enter into Voice User Interface Market 3.8 Mergers & Acquisitions, Expansion Plans 4 Voice User Interface Breakdown Data by Type 4.1 Global Voice User Interface Historic Market Size by Type (2017-2022) 4.2 Global Voice User Interface Forecasted Market Size by Type (2023-2028) 5 Voice User Interface Breakdown Data by Application 5.1 Global Voice User Interface Historic Market Size by Application (2017-2022) 5.2 Global Voice User Interface Forecasted Market Size by Application (2023-2028) 6 North America 6.1 North America Voice User Interface Market Size (2017-2028) 6.2 North America Voice User Interface Market Size by Type 6.2.1 North America Voice User Interface Market Size by Type (2017-2022) 6.2.2 North America Voice User Interface Market Size by Type (2023-2028) 6.2.3 North America Voice User Interface Market Share by Type (2017-2028) 6.3 North America Voice User Interface Market Size by Application 6.3.1 North America Voice User Interface Market Size by Application (2017-2022) 6.3.2 North America Voice User Interface Market Size by Application (2023-2028) 6.3.3 North America Voice User Interface Market Share by Application (2017-2028) 6.4 North America Voice User Interface Market Size by Country 6.4.1 North America Voice User Interface Market Size by Country (2017-2022) 6.4.2 North America Voice User Interface Market Size by Country (2023-2028) 6.4.3 United States 6.4.4 Canada 7 Europe 7.1 Europe Voice User Interface Market Size (2017-2028) 7.2 Europe Voice User Interface Market Size by Type 7.2.1 Europe Voice User Interface Market Size by Type (2017-2022) 7.2.2 Europe Voice User Interface Market Size by Type (2023-2028) 7.2.3 Europe Voice User Interface Market Share by Type (2017-2028) 7.3 Europe Voice User Interface Market Size by Application 7.3.1 Europe Voice User Interface Market Size by Application (2017-2022) 7.3.2 Europe Voice User Interface Market Size by Application (2023-2028) 7.3.3 Europe Voice User Interface Market Share by Application (2017-2028) 7.4 Europe Voice User Interface Market Size by Country 7.4.1 Europe Voice User Interface Market Size by Country (2017-2022) 7.4.2 Europe Voice User Interface Market Size by Country (2023-2028) 7.4.3 Germany 7.4.4 France 7.4.5 U.K. 7.4.6 Italy 7.4.7 Russia 7.4.8 Nordic Countries 8 Asia-Pacific 8.1 Asia-Pacific Voice User Interface Market Size (2017-2028) 8.2 Asia-Pacific Voice User Interface Market Size by Type 8.2.1 Asia-Pacific Voice User Interface Market Size by Type (2017-2022) 8.2.2 Asia-Pacific Voice User Interface Market Size by Type (2023-2028) 8.2.3 Asia-Pacific Voice User Interface Market Share by Type (2017-2028) 8.3 Asia-Pacific Voice User Interface Market Size by Application 8.3.1 Asia-Pacific Voice User Interface Market Size by Application (2017-2022) 8.3.2 Asia-Pacific Voice User Interface Market Size by Application (2023-2028) 8.3.3 Asia-Pacific Voice User Interface Market Share by Application (2017-2028) 8.4 Asia-Pacific Voice User Interface Market Size by Region 8.4.1 Asia-Pacific Voice User Interface Market Size by Region (2017-2022) 8.4.2 Asia-Pacific Voice User Interface Market Size by Region (2023-2028) 8.4.3 China 8.4.4 Japan 8.4.5 South Korea 8.4.6 Southeast Asia 8.4.7 India 8.4.8 Australia 9 Latin America 9.1 Latin America Voice User Interface Market Size (2017-2028) 9.2 Latin America Voice User Interface Market Size by Type 9.2.1 Latin America Voice User Interface Market Size by Type (2017-2022) 9.2.2 Latin America Voice User Interface Market Size by Type (2023-2028) 9.2.3 Latin America Voice User Interface Market Share by Type (2017-2028) 9.3 Latin America Voice User Interface Market Size by Application 9.3.1 Latin America Voice User Interface Market Size by Application (2017-2022) 9.3.2 Latin America Voice User Interface Market Size by Application (2023-2028) 9.3.3 Latin America Voice User Interface Market Share by Application (2017-2028) 9.4 Latin America Voice User Interface Market Size by Country 9.4.1 Latin America Voice User Interface Market Size by Country (2017-2022) 9.4.2 Latin America Voice User Interface Market Size by Country (2023-2028) 9.4.3 Mexico 9.4.4 Brazil 10 Middle East & Africa 10.1 Middle East & Africa Voice User Interface Market Size (2017-2028) 10.2 Middle East & Africa Voice User Interface Market Size by Type 10.2.1 Middle East & Africa Voice User Interface Market Size by Type (2017-2022) 10.2.2 Middle East & Africa Voice User Interface Market Size by Type (2023-2028) 10.2.3 Middle East & Africa Voice User Interface Market Share by Type (2017-2028) 10.3 Middle East & Africa Voice User Interface Market Size by Application 10.3.1 Middle East & Africa Voice User Interface Market Size by Application (2017-2022) 10.3.2 Middle East & Africa Voice User Interface Market Size by Application (2023-2028) 10.3.3 Middle East & Africa Voice User Interface Market Share by Application (2017-2028) 10.4 Middle East & Africa Voice User Interface Market Size by Country 10.4.1 Middle East & Africa Voice User Interface Market Size by Country (2017-2022) 10.4.2 Middle East & Africa Voice User Interface Market Size by Country (2023-2028) 10.4.3 Turkey 10.4.4 Saudi Arabia 10.4.5 UAE 11 Key Players Profiles 11.1 Advanced Voice Recognition Systems, Inc. 11.1.1 Advanced Voice Recognition Systems, Inc. Company Details 11.1.2 Advanced Voice Recognition Systems, Inc. Business Overview 11.1.3 Advanced Voice Recognition Systems, Inc. Voice User Interface Introduction 11.1.4 Advanced Voice Recognition Systems, Inc. Revenue in Voice User Interface Business (2017-2022) 11.1.5 Advanced Voice Recognition Systems, Inc. Recent Developments 11.2 Agnitio S.L. 11.2.1 Agnitio S.L. Company Details 11.2.2 Agnitio S.L. Business Overview 11.2.3 Agnitio S.L. Voice User Interface Introduction 11.2.4 Agnitio S.L. Revenue in Voice User Interface Business (2017-2022) 11.2.5 Agnitio S.L. Recent Developments 11.3 Apple, Inc. 11.3.1 Apple, Inc. Company Details 11.3.2 Apple, Inc. Business Overview 11.3.3 Apple, Inc. Voice User Interface Introduction 11.3.4 Apple, Inc. Revenue in Voice User Interface Business (2017-2022) 11.3.5 Apple, Inc. Recent Developments 11.4 Amazon, Inc. 11.4.1 Amazon, Inc. Company Details 11.4.2 Amazon, Inc. Business Overview 11.4.3 Amazon, Inc. Voice User Interface Introduction 11.4.4 Amazon, Inc. Revenue in Voice User Interface Business (2017-2022) 11.4.5 Amazon, Inc. Recent Developments 11.5 Baidu, Inc. 11.5.1 Baidu, Inc. Company Details 11.5.2 Baidu, Inc. Business Overview 11.5.3 Baidu, Inc. Voice User Interface Introduction 11.5.4 Baidu, Inc. Revenue in Voice User Interface Business (2017-2022) 11.5.5 Baidu, Inc. Recent Developments 11.6 BioTrust ID B.V. 11.6.1 BioTrust ID B.V. Company Details 11.6.2 BioTrust ID B.V. Business Overview 11.6.3 BioTrust ID B.V. Voice User Interface Introduction 11.6.4 BioTrust ID B.V. Revenue in Voice User Interface Business (2017-2022) 11.6.5 BioTrust ID B.V. Recent Developments 11.7 CastleOS Software, LLC 11.7.1 CastleOS Software, LLC Company Details 11.7.2 CastleOS Software, LLC Business Overview 11.7.3 CastleOS Software, LLC Voice User Interface Introduction 11.7.4 CastleOS Software, LLC Revenue in Voice User Interface Business (2017-2022) 11.7.5 CastleOS Software, LLC Recent Developments 11.8 Facebook 11.8.1 Facebook Company Details 11.8.2 Facebook Business Overview 11.8.3 Facebook Voice User Interface Introduction 11.8.4 Facebook Revenue in Voice User Interface Business (2017-2022) 11.8.5 Facebook Recent Developments 11.9 Google 11.9.1 Google Company Details 11.9.2 Google Business Overview 11.9.3 Google Voice User Interface Introduction 11.9.4 Google Revenue in Voice User Interface Business (2017-2022) 11.9.5 Google Recent Developments 11.10 Microsoft Corporation 11.10.1 Microsoft Corporation Company Details 11.10.2 Microsoft Corporation Business Overview 11.10.3 Microsoft Corporation Voice User Interface Introduction 11.10.4 Microsoft Corporation Revenue in Voice User Interface Business (2017-2022) 11.10.5 Microsoft Corporation Recent Developments 12 Analyst's Viewpoints/Conclusions 13 Appendix 13.1 Research Methodology 13.1.1 Methodology/Research Approach 13.1.2 Data Source 13.2 Author Details 13.3 Disclaimer

List of Tables Table 1. Global Voice User Interface Market Size Growth Rate by Type (US$ Million), 2017 VS 2021 VS 2028 Table 2. Key Players of Solution Table 3. Key Players of Service Table 4. Global Voice User Interface Market Size Growth Rate by Application (US$ Million), 2017 VS 2021 VS 2028 Table 5. Global Voice User Interface Market Size by Region (US$ Million): 2017 VS 2021 VS 2028 Table 6. Global Voice User Interface Market Size by Region (2017-2022) & (US$ Million) Table 7. Global Voice User Interface Market Share by Region (2017-2022) Table 8. Global Voice User Interface Forecasted Market Size by Region (2023-2028) & (US$ Million) Table 9. Global Voice User Interface Market Share by Region (2023-2028) Table 10. Voice User Interface Market Trends Table 11. Voice User Interface Market Drivers Table 12. Voice User Interface Market Challenges Table 13. Voice User Interface Market Restraints Table 14. Global Voice User Interface Revenue by Players (2017-2022) & (US$ Million) Table 15. Global Voice User Interface Revenue Share by Players (2017-2022) Table 16. Global Top Voice User Interface by Company Type (Tier 1, Tier 2, and Tier 3) & (based on the Revenue in Voice User Interface as of 2021) Table 17. Ranking of Global Top Voice User Interface Companies by Revenue (US$ Million) in 2021 Table 18. Global 5 Largest Players Market Share by Voice User Interface Revenue (CR5 and HHI) & (2017-2022) Table 19. Key Players Headquarters and Area Served Table 20. Key Players Voice User Interface Product Solution and Service Table 21. Date of Enter into Voice User Interface Market Table 22. Mergers & Acquisitions, Expansion Plans Table 23. Global Voice User Interface Market Size by Type (2017-2022) & (US$ Million) Table 24. Global Voice User Interface Revenue Market Share by Type (2017-2022) Table 25. Global Voice User Interface Forecasted Market Size by Type (2023-2028) & (US$ Million) Table 26. Global Voice User Interface Revenue Market Share by Type (2023-2028) Table 27. Global Voice User Interface Market Size by Application (2017-2022) & (US$ Million) Table 28. Global Voice User Interface Revenue Share by Application (2017-2022) Table 29. Global Voice User Interface Forecasted Market Size by Application (2023-2028) & (US$ Million) Table 30. Global Voice User Interface Revenue Share by Application (2023-2028) Table 31. North America Voice User Interface Market Size by Type (2017-2022) & (US$ Million) Table 32. North America Voice User Interface Market Size by Type (2023-2028) & (US$ Million) Table 33. North America Voice User Interface Market Size by Application (2017-2022) & (US$ Million) Table 34. North America Voice User Interface Market Size by Application (2023-2028) & (US$ Million) Table 35. North America Voice User Interface Market Size by Country (2017-2022) & (US$ Million) Table 36. North America Voice User Interface Market Size by Country (2023-2028) & (US$ Million) Table 37. Europe Voice User Interface Market Size by Type (2017-2022) & (US$ Million) Table 38. Europe Voice User Interface Market Size by Type (2023-2028) & (US$ Million) Table 39. Europe Voice User Interface Market Size by Application (2017-2022) & (US$ Million) Table 40. Europe Voice User Interface Market Size by Application (2023-2028) & (US$ Million) Table 41. Europe Voice User Interface Market Size by Country (2017-2022) & (US$ Million) Table 42. Europe Voice User Interface Market Size by Country (2023-2028) & (US$ Million) Table 43. Asia Pacific Voice User Interface Market Size by Type (2017-2022) & (US$ Million) Table 44. Asia Pacific Voice User Interface Market Size by Type (2023-2028) & (US$ Million) Table 45. Asia Pacific Voice User Interface Market Size by Application (2017-2022) & (US$ Million) Table 46. Asia Pacific Voice User Interface Market Size by Application (2023-2028) & (US$ Million) Table 47. Asia Pacific Voice User Interface Market Size by Region (2017-2022) & (US$ Million) Table 48. Asia Pacific Voice User Interface Market Size by Region (2023-2028) & (US$ Million) Table 49. Latin America Voice User Interface Market Size by Type (2017-2022) & (US$ Million) Table 50. Latin America Voice User Interface Market Size by Type (2023-2028) & (US$ Million) Table 51. Latin America Voice User Interface Market Size by Application (2017-2022) & (US$ Million) Table 52. Latin America Voice User Interface Market Size by Application (2023-2028) & (US$ Million) Table 53. Latin America Voice User Interface Market Size by Country (2017-2022) & (US$ Million) Table 54. Latin America Voice User Interface Market Size by Country (2023-2028) & (US$ Million) Table 55. Middle East and Africa Voice User Interface Market Size by Type (2017-2022) & (US$ Million) Table 56. Middle East and Africa Voice User Interface Market Size by Type (2023-2028) & (US$ Million) Table 57. Middle East and Africa Voice User Interface Market Size by Application (2017-2022) & (US$ Million) Table 58. Middle East and Africa Voice User Interface Market Size by Application (2023-2028) & (US$ Million) Table 59. Middle East and Africa Voice User Interface Market Size by Country (2017-2022) & (US$ Million) Table 60. Middle East and Africa Voice User Interface Market Size by Country (2023-2028) & (US$ Million) Table 61. Advanced Voice Recognition Systems, Inc. Company Details Table 62. Advanced Voice Recognition Systems, Inc. Business Overview Table 63. Advanced Voice Recognition Systems, Inc. Voice User Interface Product Table 64. Advanced Voice Recognition Systems, Inc. Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 65. Advanced Voice Recognition Systems, Inc. Recent Developments Table 66. Agnitio S.L. Company Details Table 67. Agnitio S.L. Business Overview Table 68. Agnitio S.L. Voice User Interface Product Table 69. Agnitio S.L. Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 70. Agnitio S.L. Recent Developments Table 71. Apple, Inc. Company Details Table 72. Apple, Inc. Business Overview Table 73. Apple, Inc. Voice User Interface Product Table 74. Apple, Inc. Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 75. Apple, Inc. Recent Developments Table 76. Amazon, Inc. Company Details Table 77. Amazon, Inc. Business Overview Table 78. Amazon, Inc. Voice User Interface Product Table 79. Amazon, Inc. Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 80. Amazon, Inc. Recent Developments Table 81. Baidu, Inc. Company Details Table 82. Baidu, Inc. Business Overview Table 83. Baidu, Inc. Voice User Interface Product Table 84. Baidu, Inc. Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 85. Baidu, Inc. Recent Developments Table 86. BioTrust ID B.V. Company Details Table 87. BioTrust ID B.V. Business Overview Table 88. BioTrust ID B.V. Voice User Interface Product Table 89. BioTrust ID B.V. Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 90. BioTrust ID B.V. Recent Developments Table 91. CastleOS Software, LLC Company Details Table 92. CastleOS Software, LLC Business Overview Table 93. CastleOS Software, LLC Voice User Interface Product Table 94. CastleOS Software, LLC Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 95. CastleOS Software, LLC Recent Developments Table 96. Facebook Company Details Table 97. Facebook Business Overview Table 98. Facebook Voice User Interface Product Table 99. Facebook Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 100. Facebook Recent Developments Table 101. Google Company Details Table 102. Google Business Overview Table 103. Google Voice User Interface Product Table 104. Google Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 105. Google Recent Developments Table 106. Microsoft Corporation Company Details Table 107. Microsoft Corporation Business Overview Table 108. Microsoft Corporation Voice User Interface Product Table 109. Microsoft Corporation Revenue in Voice User Interface Business (2017-2022) & (US$ Million) Table 110. Microsoft Corporation Recent Developments Table 111. Research Programs/Design for This Report Table 112. Key Data Information from Secondary Sources Table 113. Key Data Information from Primary Sources List of Figures Figure 1. Global Voice User Interface Market Share by Type: 2021 VS 2028 Figure 2. Solution Features Figure 3. Service Features Figure 4. Global Voice User Interface Market Share by Application: 2021 VS 2028 Figure 5. BFSI Case Studies Figure 6. Retail & E-commerce Case Studies Figure 7. Consumer Electronic Case Studies Figure 8. Automotive Case Studies Figure 9. Others Case Studies Figure 10. Voice User Interface Report Years Considered Figure 11. Global Voice User Interface Market Size (US$ Million), Year-over-Year: 2017-2028 Figure 12. Global Voice User Interface Market Size, (US$ Million), 2017 VS 2021 VS 2028 Figure 13. Global Voice User Interface Market Share by Region: 2021 VS 2028 Figure 14. Global Voice User Interface Market Share by Players in 2021 Figure 15. Global Top Voice User Interface Players by Company Type (Tier 1, Tier 2, and Tier 3) & (based on the Revenue in Voice User Interface as of 2021) Figure 16. The Top 10 and 5 Players Market Share by Voice User Interface Revenue in 2021 Figure 17. North America Voice User Interface Market Size YoY (2017-2028) & (US$ Million) Figure 18. North America Voice User Interface Market Size Market Share by Type (2017-2028) Figure 19. North America Voice User Interface Market Size Market Share by Application (2017-2028) Figure 20. North America Voice User Interface Market Size Share by Country (2017-2028) Figure 21. United States Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 22. Canada Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 23. Europe Voice User Interface Market Size YoY (2017-2028) & (US$ Million) Figure 24. Europe Voice User Interface Market Size Market Share by Type (2017-2028) Figure 25. Europe Voice User Interface Market Size Market Share by Application (2017-2028) Figure 26. Europe Voice User Interface Market Size Share by Country (2017-2028) Figure 27. Germany Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 28. France Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 29. U.K. Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 30. Italy Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 31. Russia Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 32. Nordic Countries Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 33. Asia-Pacific Voice User Interface Market Size YoY (2017-2028) & (US$ Million) Figure 34. Asia Pacific Voice User Interface Market Size Market Share by Type (2017-2028) Figure 35. Asia Pacific Voice User Interface Market Size Market Share by Application (2017-2028) Figure 36. Asia Pacific Voice User Interface Market Size Share by Region (2017-2028) Figure 37. China Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 38. Japan Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 39. South Korea Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 40. Southeast Asia Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 41. India Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 42. Australia Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) List of Figures Figure 43. Latin America Voice User Interface Market Size YoY (2017-2028) & (US$ Million) Figure 44. Latin America Voice User Interface Market Size Market Share by Type (2017-2028) Figure 45. Latin America Voice User Interface Market Size Market Share by Application (2017-2028) Figure 46. Latin America Voice User Interface Market Size Share by Country (2017-2028) Figure 47. Mexico Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 48. Brazil Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 49. Middle East & Africa Voice User Interface Market Size YoY (2017-2028) & (US$ Million) Figure 50. Middle East and Africa Voice User Interface Market Size Market Share by Type (2017-2028) Figure 51. Middle East and Africa Voice User Interface Market Size Market Share by Application (2017-2028) Figure 52. Middle East and Africa Voice User Interface Market Size Share by Country (2017-2028) Figure 53. Turkey Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 54. Saudi Arabia Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 55. UAE Voice User Interface Market Size YoY Growth (2017-2028) & (US$ Million) Figure 56. Advanced Voice Recognition Systems, Inc. Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 57. Agnitio S.L. Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 58. Apple, Inc. Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 59. Amazon, Inc. Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 60. Baidu, Inc. Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 61. BioTrust ID B.V. Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 62. CastleOS Software, LLC Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 63. Facebook Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 64. Google Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 65. Microsoft Corporation Revenue Growth Rate in Voice User Interface Business (2017-2022) Figure 66. Bottom-up and Top-down Approaches for This Report Figure 67. Data Triangulation Figure 68. Key Executives Interviewed

Advanced Voice Recognition Systems, Inc. Agnitio S.L. Apple, Inc. Amazon, Inc. Baidu, Inc. BioTrust ID B.V. CastleOS Software, LLC Facebook Google Microsoft Corporation