1 Report Overview 1.1 Study Scope 1.2 Market Analysis by Type 1.2.1 Global IT Monitoring Tools Market Size Growth Rate by Type: 2016 VS 2021 VS 2027 1.2.2 IT Operations Analytics (ITOA) 1.2.3 IT Infrastructure Management (ITIM) 1.2.4 Others 1.3 Market by Application 1.3.1 Global IT Monitoring Tools Market Share by Application: 2016 VS 2021 VS 2027 1.3.2 Enterprise 1.3.3 Financial 1.3.4 Government 1.3.5 Healthcare & Medical 1.3.6 Others 1.4 Study Objectives 1.5 Years Considered 2 Global Growth Trends 2.1 Global IT Monitoring Tools Market Perspective (2016-2027) 2.2 IT Monitoring Tools Growth Trends by Regions 2.2.1 IT Monitoring Tools Market Size by Regions: 2016 VS 2021 VS 2027 2.2.2 IT Monitoring Tools Historic Market Share by Regions (2016-2021) 2.2.3 IT Monitoring Tools Forecasted Market Size by Regions (2022-2027) 2.3 IT Monitoring Tools Industry Dynamic 2.3.1 IT Monitoring Tools Market Trends 2.3.2 IT Monitoring Tools Market Drivers 2.3.3 IT Monitoring Tools Market Challenges 2.3.4 IT Monitoring Tools Market Restraints 3 Competition Landscape by Key Players 3.1 Global Top IT Monitoring Tools Players by Revenue 3.1.1 Global Top IT Monitoring Tools Players by Revenue (2016-2021) 3.1.2 Global IT Monitoring Tools Revenue Market Share by Players (2016-2021) 3.2 Global IT Monitoring Tools Market Share by Company Type (Tier 1, Tier 2 and Tier 3) 3.3 Players Covered: Ranking by IT Monitoring Tools Revenue 3.4 Global IT Monitoring Tools Market Concentration Ratio 3.4.1 Global IT Monitoring Tools Market Concentration Ratio (CR5 and HHI) 3.4.2 Global Top 10 and Top 5 Companies by IT Monitoring Tools Revenue in 2020 3.5 IT Monitoring Tools Key Players Head office and Area Served 3.6 Key Players IT Monitoring Tools Product Solution and Service 3.7 Date of Enter into IT Monitoring Tools Market 3.8 Mergers & Acquisitions, Expansion Plans 4 IT Monitoring Tools Breakdown Data by Type 4.1 Global IT Monitoring Tools Historic Market Size by Type (2016-2021) 4.2 Global IT Monitoring Tools Forecasted Market Size by Type (2022-2027) 5 IT Monitoring Tools Breakdown Data by Application 5.1 Global IT Monitoring Tools Historic Market Size by Application (2016-2021) 5.2 Global IT Monitoring Tools Forecasted Market Size by Application (2022-2027) 6 North America 6.1 North America IT Monitoring Tools Market Size (2016-2027) 6.2 North America IT Monitoring Tools Market Size by Type 6.2.1 North America IT Monitoring Tools Market Size by Type (2016-2021) 6.2.2 North America IT Monitoring Tools Market Size by Type (2022-2027) 6.2.3 North America IT Monitoring Tools Market Size by Type (2016-2027) 6.3 North America IT Monitoring Tools Market Size by Application 6.3.1 North America IT Monitoring Tools Market Size by Application (2016-2021) 6.3.2 North America IT Monitoring Tools Market Size by Application (2022-2027) 6.3.3 North America IT Monitoring Tools Market Size by Application (2016-2027) 6.4 North America IT Monitoring Tools Market Size by Country 6.4.1 North America IT Monitoring Tools Market Size by Country (2016-2021) 6.4.2 North America IT Monitoring Tools Market Size by Country (2022-2027) 6.4.3 United States 6.4.4 Canada 7 Europe 7.1 Europe IT Monitoring Tools Market Size (2016-2027) 7.2 Europe IT Monitoring Tools Market Size by Type 7.2.1 Europe IT Monitoring Tools Market Size by Type (2016-2021) 7.2.2 Europe IT Monitoring Tools Market Size by Type (2022-2027) 7.2.3 Europe IT Monitoring Tools Market Size by Type (2016-2027) 7.3 Europe IT Monitoring Tools Market Size by Application 7.3.1 Europe IT Monitoring Tools Market Size by Application (2016-2021) 7.3.2 Europe IT Monitoring Tools Market Size by Application (2022-2027) 7.3.3 Europe IT Monitoring Tools Market Size by Application (2016-2027) 7.4 Europe IT Monitoring Tools Market Size by Country 7.4.1 Europe IT Monitoring Tools Market Size by Country (2016-2021) 7.4.2 Europe IT Monitoring Tools Market Size by Country (2022-2027) 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 8 Asia-Pacific 8.1 Asia-Pacific IT Monitoring Tools Market Size (2016-2027) 8.2 Asia-Pacific IT Monitoring Tools Market Size by Type 8.2.1 Asia-Pacific IT Monitoring Tools Market Size by Type (2016-2021) 8.2.2 Asia-Pacific IT Monitoring Tools Market Size by Type (2022-2027) 8.2.3 Asia-Pacific IT Monitoring Tools Market Size by Type (2016-2027) 8.3 Asia-Pacific IT Monitoring Tools Market Size by Application 8.3.1 Asia-Pacific IT Monitoring Tools Market Size by Application (2016-2021) 8.3.2 Asia-Pacific IT Monitoring Tools Market Size by Application (2022-2027) 8.3.3 Asia-Pacific IT Monitoring Tools Market Size by Application (2016-2027) 8.4 Asia-Pacific IT Monitoring Tools Market Size by Region 8.4.1 Asia-Pacific IT Monitoring Tools Market Size by Region (2016-2021) 8.4.2 Asia-Pacific IT Monitoring Tools Market Size by Region (2022-2027) 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 IT Monitoring Tools Market Size (2016-2027) 9.2 Latin America IT Monitoring Tools Market Size by Type 9.2.1 Latin America IT Monitoring Tools Market Size by Type (2016-2021) 9.2.2 Latin America IT Monitoring Tools Market Size by Type (2022-2027) 9.2.3 Latin America IT Monitoring Tools Market Size by Type (2016-2027) 9.3 Latin America IT Monitoring Tools Market Size by Application 9.3.1 Latin America IT Monitoring Tools Market Size by Application (2016-2021) 9.3.2 Latin America IT Monitoring Tools Market Size by Application (2022-2027) 9.3.3 Latin America IT Monitoring Tools Market Size by Application (2016-2027) 9.4 Latin America IT Monitoring Tools Market Size by Country 9.4.1 Latin America IT Monitoring Tools Market Size by Country (2016-2021) 9.4.2 Latin America IT Monitoring Tools Market Size by Country (2022-2027) 9.4.3 Mexico 9.4.4 Brazil 10 Middle East & Africa 10.1 Middle East & Africa IT Monitoring Tools Market Size (2016-2027) 10.2 Middle East & Africa IT Monitoring Tools Market Size by Type 10.2.1 Middle East & Africa IT Monitoring Tools Market Size by Type (2016-2021) 10.2.2 Middle East & Africa IT Monitoring Tools Market Size by Type (2022-2027) 10.2.3 Middle East & Africa IT Monitoring Tools Market Size by Type (2016-2027) 10.3 Middle East & Africa IT Monitoring Tools Market Size by Application 10.3.1 Middle East & Africa IT Monitoring Tools Market Size by Application (2016-2021) 10.3.2 Middle East & Africa IT Monitoring Tools Market Size by Application (2022-2027) 10.3.3 Middle East & Africa IT Monitoring Tools Market Size by Application (2016-2027) 10.4 Middle East & Africa IT Monitoring Tools Market Size by Country 10.4.1 Middle East & Africa IT Monitoring Tools Market Size by Country (2016-2021) 10.4.2 Middle East & Africa IT Monitoring Tools Market Size by Country (2022-2027) 10.4.3 Turkey 10.4.4 Saudi Arabia 10.4.5 UAE 11 Key Players Profiles 11.1 BMC Software 11.1.1 BMC Software Company Details 11.1.2 BMC Software Business Overview 11.1.3 BMC Software IT Monitoring Tools Introduction 11.1.4 BMC Software Revenue in IT Monitoring Tools Business (2016-2021) 11.1.5 BMC Software Recent Development 11.2 HPE 11.2.1 HPE Company Details 11.2.2 HPE Business Overview 11.2.3 HPE IT Monitoring Tools Introduction 11.2.4 HPE Revenue in IT Monitoring Tools Business (2016-2021) 11.2.5 HPE Recent Development 11.3 IBM 11.3.1 IBM Company Details 11.3.2 IBM Business Overview 11.3.3 IBM IT Monitoring Tools Introduction 11.3.4 IBM Revenue in IT Monitoring Tools Business (2016-2021) 11.3.5 IBM Recent Development 11.4 Microsoft 11.4.1 Microsoft Company Details 11.4.2 Microsoft Business Overview 11.4.3 Microsoft IT Monitoring Tools Introduction 11.4.4 Microsoft Revenue in IT Monitoring Tools Business (2016-2021) 11.4.5 Microsoft Recent Development 11.5 SolarWinds 11.5.1 SolarWinds Company Details 11.5.2 SolarWinds Business Overview 11.5.3 SolarWinds IT Monitoring Tools Introduction 11.5.4 SolarWinds Revenue in IT Monitoring Tools Business (2016-2021) 11.5.5 SolarWinds Recent Development 11.6 Splunk 11.6.1 Splunk Company Details 11.6.2 Splunk Business Overview 11.6.3 Splunk IT Monitoring Tools Introduction 11.6.4 Splunk Revenue in IT Monitoring Tools Business (2016-2021) 11.6.5 Splunk Recent Development 11.7 Oracle 11.7.1 Oracle Company Details 11.7.2 Oracle Business Overview 11.7.3 Oracle IT Monitoring Tools Introduction 11.7.4 Oracle Revenue in IT Monitoring Tools Business (2016-2021) 11.7.5 Oracle Recent Development 11.8 NEC 11.8.1 NEC Company Details 11.8.2 NEC Business Overview 11.8.3 NEC IT Monitoring Tools Introduction 11.8.4 NEC Revenue in IT Monitoring Tools Business (2016-2021) 11.8.5 NEC Recent Development 12 Analyst's Viewpoints/Conclusions 13 Appendix 13.1 Research Methodology 13.1.1 Methodology/Research Approach 13.1.2 Data Source 13.2 Disclaimer 13.3 Author Details

List of Tables Table 1. Global IT Monitoring Tools Market Size Growth Rate by Type (US$ Million):2016 VS 2021 VS 2027 Table 2. Key Players of IT Operations Analytics (ITOA) Table 3. Key Players of IT Infrastructure Management (ITIM) Table 4. Key Players of Others Table 5. Global IT Monitoring Tools Market Size Growth by Application (US$ Million): 2016 VS 2021 VS 2027 Table 6. Global IT Monitoring Tools Market Size by Regions (US$ Million): 2016 VS 2021 VS 2027 Table 7. Global IT Monitoring Tools Market Size by Regions (2016-2021) & (US$ Million) Table 8. Global IT Monitoring Tools Market Share by Regions (2016-2021) Table 9. Global IT Monitoring Tools Forecasted Market Size by Regions (2022-2027) & (US$ Million) Table 10. Global IT Monitoring Tools Market Share by Regions (2022-2027) Table 11. IT Monitoring Tools Market Trends Table 12. IT Monitoring Tools Market Drivers Table 13. IT Monitoring Tools Market Challenges Table 14. IT Monitoring Tools Market Restraints Table 15. Global IT Monitoring Tools Revenue by Players (2016-2021) & (US$ Million) Table 16. Global IT Monitoring Tools Market Share by Players (2016-2021) Table 17. Global Top IT Monitoring Tools Players by Company Type (Tier 1, Tier 2 and Tier 3) (based on the Revenue in IT Monitoring Tools as of 2020) Table 18. Ranking of Global Top IT Monitoring Tools Companies by Revenue (US$ Million) in 2020 Table 19. Global 5 Largest Players Market Share by IT Monitoring Tools Revenue (CR5 and HHI) & (2016-2021) Table 20. Key Players Headquarters and Area Served Table 21. Key Players IT Monitoring Tools Product Solution and Service Table 22. Date of Enter into IT Monitoring Tools Market Table 23. Mergers & Acquisitions, Expansion Plans Table 24. Global IT Monitoring Tools Market Size by Type (2016-2021) (US$ Million) Table 25. Global IT Monitoring Tools Revenue Market Share by Type (2016-2021) Table 26. Global IT Monitoring Tools Forecasted Market Size by Type (2022-2027) (US$ Million) Table 27. Global IT Monitoring Tools Revenue Market Share by Type (2022-2027) & (US$ Million) Table 28. Global IT Monitoring Tools Market Size Share by Application (2016-2021) & (US$ Million) Table 29. Global IT Monitoring Tools Revenue Market Share by Application (2016-2021) Table 30. Global IT Monitoring Tools Forecasted Market Size by Application (2022-2027) (US$ Million) Table 31. Global IT Monitoring Tools Revenue Market Share by Application (2022-2027) & (US$ Million) Table 32. North America IT Monitoring Tools Market Size by Type (2016-2021) (US$ Million) Table 33. North America IT Monitoring Tools Market Size by Type (2022-2027) & (US$ Million) Table 34. North America IT Monitoring Tools Market Size by Application (2016-2021) (US$ Million) Table 35. North America IT Monitoring Tools Market Size by Application (2022-2027) & (US$ Million) Table 36. North America IT Monitoring Tools Market Size by Country (2016-2021) & (US$ Million) Table 37. North America IT Monitoring Tools Market Size by Country (2022-2027) & (US$ Million) Table 38. Europe IT Monitoring Tools Market Size by Type (2016-2021) (US$ Million) Table 39. Europe IT Monitoring Tools Market Size by Type (2022-2027) & (US$ Million) Table 40. Europe IT Monitoring Tools Market Size by Application (2016-2021) (US$ Million) Table 41. Europe IT Monitoring Tools Market Size by Application (2022-2027) & (US$ Million) Table 42. Europe IT Monitoring Tools Market Size by Country (2016-2021) & (US$ Million) Table 43. Europe IT Monitoring Tools Market Size by Country (2022-2027) & (US$ Million) Table 44. Asia-Pacific IT Monitoring Tools Market Size by Type (2016-2021) (US$ Million) Table 45. Asia-Pacific IT Monitoring Tools Market Size by Type (2022-2027) & (US$ Million) Table 46. Asia-Pacific IT Monitoring Tools Market Size by Application (2016-2021) (US$ Million) Table 47. Asia-Pacific IT Monitoring Tools Market Size by Application (2022-2027) & (US$ Million) Table 48. Asia-Pacific IT Monitoring Tools Market Size by Region (2016-2021) & (US$ Million) Table 49. Asia-Pacific IT Monitoring Tools Market Size by Region (2022-2027) & (US$ Million) Table 50. Latin America IT Monitoring Tools Market Size by Type (2016-2021) (US$ Million) Table 51. Latin America IT Monitoring Tools Market Size by Type (2022-2027) & (US$ Million) Table 52. Latin America IT Monitoring Tools Market Size by Application (2016-2021) (US$ Million) Table 53. Latin America IT Monitoring Tools Market Size by Application (2022-2027) & (US$ Million) Table 54. Latin America IT Monitoring Tools Market Size by Country (2016-2021) & (US$ Million) Table 55. Latin America IT Monitoring Tools Market Size by Country (2022-2027) & (US$ Million) Table 56. Middle East & Africa IT Monitoring Tools Market Size by Type (2016-2021) (US$ Million) Table 57. Middle East & Africa IT Monitoring Tools Market Size by Type (2022-2027) & (US$ Million) Table 58. Middle East & Africa IT Monitoring Tools Market Size by Application (2016-2021) (US$ Million) Table 59. Middle East & Africa IT Monitoring Tools Market Size by Application (2022-2027) & (US$ Million) Table 60. Middle East & Africa IT Monitoring Tools Market Size by Country (2016-2021) & (US$ Million) Table 61. Middle East & Africa IT Monitoring Tools Market Size by Country (2022-2027) & (US$ Million) Table 62. BMC Software Company Details Table 63. BMC Software Business Overview Table 64. BMC Software IT Monitoring Tools Product Table 65. BMC Software Revenue in IT Monitoring Tools Business (2016-2021) & (US$ Million) Table 66. BMC Software Recent Development Table 67. HPE Company Details Table 68. HPE Business Overview Table 69. HPE IT Monitoring Tools Product Table 70. HPE Revenue in IT Monitoring Tools Business (2016-2021) & (US$ Million) Table 71. HPE Recent Development Table 72. IBM Company Details Table 73. IBM Business Overview Table 74. IBM IT Monitoring Tools Product Table 75. IBM Revenue in IT Monitoring Tools Business (2016-2021) & (US$ Million) Table 76. IBM Recent Development Table 77. Microsoft Company Details Table 78. Microsoft Business Overview Table 79. Microsoft IT Monitoring Tools Product Table 80. Microsoft Revenue in IT Monitoring Tools Business (2016-2021) & (US$ Million) Table 81. Microsoft Recent Development Table 82. SolarWinds Company Details Table 83. SolarWinds Business Overview Table 84. SolarWinds IT Monitoring Tools Product Table 85. SolarWinds Revenue in IT Monitoring Tools Business (2016-2021) & (US$ Million) Table 86. SolarWinds Recent Development Table 87. Splunk Company Details Table 88. Splunk Business Overview Table 89. Splunk IT Monitoring Tools Product Table 90. Splunk Revenue in IT Monitoring Tools Business (2016-2021) & (US$ Million) Table 91. Splunk Recent Development Table 92. Oracle Company Details Table 93. Oracle Business Overview Table 94. Oracle IT Monitoring Tools Product Table 95. Oracle Revenue in IT Monitoring Tools Business (2016-2021) & (US$ Million) Table 96. Oracle Recent Development Table 97. NEC Company Details Table 98. NEC Business Overview Table 99. NEC Revenue in IT Monitoring Tools Business (2016-2021) & (US$ Million) Table 100. NEC Recent Development Table 101. Research Programs/Design for This Report Table 102. Key Data Information from Secondary Sources Table 103. Key Data Information from Primary Sources List of Figures Figure 1. Global IT Monitoring Tools Market Share by Type: 2020 VS 2027 Figure 2. IT Operations Analytics (ITOA) Features Figure 3. IT Infrastructure Management (ITIM) Features Figure 4. Others Features Figure 5. Global IT Monitoring Tools Market Share by Application: 2020 VS 2027 Figure 6. Enterprise Case Studies Figure 7. Financial Case Studies Figure 8. Government Case Studies Figure 9. Healthcare & Medical Case Studies Figure 10. Others Case Studies Figure 11. IT Monitoring Tools Report Years Considered Figure 12. Global IT Monitoring Tools Market Size (US$ Million), Year-over-Year: 2016-2027 Figure 13. Global IT Monitoring Tools Market Size (US$ Million), 2016 VS 2021 VS 2027 Figure 14. Global IT Monitoring Tools Market Share by Regions: 2020 VS 2027 Figure 15. Global IT Monitoring Tools Market Share by Regions (2022-2027) Figure 16. Global IT Monitoring Tools Market Share by Players in 2020 Figure 17. Global Top IT Monitoring Tools Players by Company Type (Tier 1, Tier 2 and Tier 3) (based on the Revenue in IT Monitoring Tools as of 2020 Figure 18. The Top 10 and 5 Players Market Share by IT Monitoring Tools Revenue in 2020 Figure 19. Global IT Monitoring Tools Revenue Market Share by Type (2016-2021) Figure 20. Global IT Monitoring Tools Revenue Market Share by Type (2022-2027) Figure 21. North America IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 22. North America IT Monitoring Tools Market Share by Type (2016-2027) Figure 23. North America IT Monitoring Tools Market Share by Application (2016-2027) Figure 24. North America IT Monitoring Tools Market Share by Country (2016-2027) Figure 25. United States IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 26. Canada IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 27. Europe IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 28. Europe IT Monitoring Tools Market Share by Type (2016-2027) Figure 29. Europe IT Monitoring Tools Market Share by Application (2016-2027) Figure 30. Europe IT Monitoring Tools Market Share by Country (2016-2027) Figure 31. Germany IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 32. France IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 33. U.K. IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 34. Italy IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 35. Russia IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 36. Nordic IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 37. Asia-Pacific IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 38. Asia-Pacific IT Monitoring Tools Market Share by Type (2016-2027) Figure 39. Asia-Pacific IT Monitoring Tools Market Share by Application (2016-2027) Figure 40. Asia-Pacific IT Monitoring Tools Market Share by Region (2016-2027) Figure 41. China IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 42. Japan IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 43. South Korea IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 44. Southeast Asia IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 45. India IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 46. Australia IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 47. Latin America IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 48. Latin America IT Monitoring Tools Market Share by Type (2016-2027) Figure 49. Latin America IT Monitoring Tools Market Share by Application (2016-2027) Figure 50. Latin America IT Monitoring Tools Market Share by Country (2016-2027) Figure 51. Mexico IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 52. Brazil IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 53. Middle East & Africa IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 54. Middle East & Africa IT Monitoring Tools Market Share by Type (2016-2027) Figure 55. Middle East & Africa IT Monitoring Tools Market Share by Application (2016-2027) Figure 56. Middle East & Africa IT Monitoring Tools Market Share by Country (2016-2027) Figure 57. Turkey IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 58. Saudi Arabia IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 59. UAE IT Monitoring Tools Market Size YoY Growth (2016-2027) & (US$ Million) Figure 60. BMC Software Revenue Growth Rate in IT Monitoring Tools Business (2016-2021) Figure 61. HPE Revenue Growth Rate in IT Monitoring Tools Business (2016-2021) Figure 62. IBM Revenue Growth Rate in IT Monitoring Tools Business (2016-2021) Figure 63. Microsoft Revenue Growth Rate in IT Monitoring Tools Business (2016-2021) Figure 64. SolarWinds Revenue Growth Rate in IT Monitoring Tools Business (2016-2021) Figure 65. Splunk Revenue Growth Rate in IT Monitoring Tools Business (2016-2021) Figure 66. Oracle Revenue Growth Rate in IT Monitoring Tools Business (2016-2021) Figure 67. NEC Revenue Growth Rate in IT Monitoring Tools Business (2016-2021) Figure 68. Bottom-up and Top-down Approaches for This Report Figure 69. Data Triangulation Figure 70. Key Executives Interviewed

BMC Software HPE IBM Microsoft SolarWinds Splunk Oracle NEC