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IT Abbreviations & Acronyms: Comprehensive Glossary

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There are currently 254 acronyms in this directory beginning with the letter C.
C
C&C Server
Command-and-Control Server
CA
Certificate Authority
CaaS
Communications-as-a-Service
CAB
Change Advisory Board
CAC
Call Admission Control or Common Access Card
CACS
Computer Assisted Coding System
CAD
Computer-Aided Design
CAD/CAM
Computer-Aided Design/Computer-Aided Manufacturing
CADE
Corporate Average Data Center Efficiency
CAE
Computer-Aided Engineering
CAES
Compressed Air Energy Storage
CAFE
Corporate Average Fuel Economy
CAGR
Compound Annual Growth Rate
CAIV
Cost As (An) Independent Variable
CalConnect
Calendaring and Scheduling Consortium
CALEA
Communications Assistance For Law Enforcement Act
CALS
Continuous Acquisition and Life-Cycle Support
CAM
Computer-Aided Manufacturing
CAM-I
Consortium For Advanced Manufacturing -- International
CAMM
Common Assurance Maturity Model
CAMU
Computerized Assembly Mock Up
CAN
Corporate Area Network
CAP
Carrierless Amplitude/Phase
CAP Theorem
Brewer'S Theorem
Capex
Capital Expenditure
CAPI
Common Application Programming Interface
CAPM
Cloud Application Performance Management
CAPOSS
Capacity Planning and Operation Sequence Scheduling
CAPP
Computer-Aided Process Planning
CAPTCHA
Completely Automated Public Turing Test To Tell Computers and Humans
CAS
Client Access Server, Channel-Associated Signaling, or Content-Addressed Storage
CASA
Computer and Automated Systems Association
CASE
Computer-Aided System Engineering or Computer-Aided Software Engineering
CATT
Computer Aided Test Tool
CATV
Community Access Television
CAVE
Cave Automatic Virtual Environment
CB
Citizen'S Band Radio
CBA
Cost-Benefit Analysis
CBC
Cipher Block Chaining
CBSA
Component Based Solution Assembly
CBSP
Cloud-based Security Providers
CBT
Computer-Based Training or Changed Block Tracking
CC
Common Criteria
CCB
Change Control Board
CCD
Charge-Coupled Device
CCEVS
Common Criteria Evaluation and Validation Scheme For It Security
CCIE
Cisco Certified Internetwork Expert
CCITT or ITU-T
Telecommunication Standardization Sector Of The International
CCJ
Collaborative Citizen Journalism
CCK
Complementary Code Keying
CCM
Color Changing Material
CCMM
Cloud Computing Maturity Model
CCMP
Counter Mode With Cipher Block Chaining Message Authentication Code Protocol
CCNA
Cisco Certified Network Associate
CCNP
Cisco Certified Network Professional
CCO
Chief Customer Officer, Corporate Compliance Officer, or Chief Compliance Officer
CCR
Central Contractor Registration
CCS
Common Channel Signaling, Hundred Call Second, or Centum Call Second
CCSP
Cisco Certified Security Professional
CCTV
Closed Circuit Television
CD
Cardholder Data or Compact Disc
CD-i
Compact Disc - Interactive
CDA
Clinical Document Architecture
CDC
Change Data Capture
CDD
Contract Delivery Date
CDDI
Copper Distributed Data Interface
CDE
Common Desktop Environment or Cardholder Data Environment
CDF
Channel Definition Format
CDI
Customer Data Integration
CDMA
Code-Division Multiple Access
CDMA One
Code-Division Multiple Access One
CDMA2000
Code-Division Multiple Access 2000
CDN
Content Delivery Network
CDO
Collaboration Data Objects or Chief Digital Officer
CDP
Clean Desk Policy
CDPD
Cellular Digital Packet Data
CDR
Call Detail Record
CEM
Customer Experience Management
CEMS
Contract Electronic Manufacturing Services
CEO
Chief Executive Officer
CES
Consumer Electronics Show
CF Card
Compactflash Card
CFAA
Computer Fraud and Abuse Act
CFAR
Collaboration Forecasting and Replenishment
CFB
Ciphertext Feedback
CFD
Computational Fluid Dynamics
Cfg
Configuration Management
CFI
Custom Factory Integration
CFL
Compact Fluorescent Light Bulb
CFM
Continuous Flow Manufacturing
CFML
Coldfusion Markup Language
CFO
Chief Financial Officer
CFR
Call Failure Rate
CG
Consumer Goods
CGI
Common Gateway Interface
CGMP
Current Good Manufacturing Practices
CGO
Chief Green Officer
CHAP
Challenge-Handshake Authentication Protocol
CHDR
Clinical Data Repository/Health Data Repository
CHI
Consolidated Health Informatics
CHIME
College Of Healthcare Information Management Executives
CHKDSK
Check Disk
CHMOD
Change Mode
CHRO
Chief Human Resources Officer
CHTML
Compact Html
CI
Customer Intelligence, Continuous Improvement, or Continuous Integration
CI/CD
Continous Integration/Continous Deployment
CIA
Confidentiality, Integrity, and Availability
CICS
Customer Information Control System
CIDM
Customer-Integrated Decision Making
CIDR
Classless Inter-Domain Routing or Supernetting
CIFS
Common Internet File System
CIM
Common Information Model
CIO
Chief Information Officer
CIPE
Compressed Integrated Product Engineering
CIR
Committed Information Rate
CIS
Cloud-Integrated Storage
CISA
Certified Information Systems Auditor
CISC
Complex Instruction Set Computer or Computing
Cisco IOS
Cisco Internetwork Operating System
Cisco LISP
Location Identifier Separation Protocol
CISM
Certified Information Security Manager
CISO
Chief Information Security Officer
CISP-PCI
Cardholder Information Security Program - Payment Card Industry Data Security Standard
CISPA
Cyber Intelligence Sharing and Protection Act Of 2011
CISS
Cisco Information Security Specialist
CISSP
Certified Information Systems Security Professional
CIW
Certified Internet Webmaster or Computer Intensive Workload
CKO
Chief Knowledge Officer
CL
Cluster Log
CLASS
Capacity Loading and Operation Sequence Scheduling
CLEC
Competitive Local Exchange Carrier
CLI
Command Line Interface or Common Language Infrastructure
Click Fraud
Pay-Per-Click Fraud
CLM
Council For Logistics Management
CLO
Chief Learning Officer
Cloud DR
Cloud Disaster Recovery
Cloud NAS
Cloud Network Attached Storage
CLR
Common Language Runtime
Clustered NAS
Clustered Network-Attached Storage
CM
Configuration Management or Content Management
CMA
Content Management Application
CMDB
Configuration Management Database
CMDM
Collaborative Master Data Management
CMIO
Chief Medical Information Officer
CMIP
Common Management Information Protocol
CMIS
Content Management Interoperability Services
CMM
Capability Maturity Model
CMO
Chief Marketing Officer
CMOS
Complementary Metal-Oxide Semiconductor
CMOx
Conductive Metal-Oxide
CMR
Customer-Managed Relationship
CMRP
Capacitated Material Requirements Planning
CMS
Content Management System
CMTS
Cable Modem Termination System
CMYK
Cyan, Magenta, Yellow, Key
CNA
Converged Network Adapter
CNC
Computer Numerical Control
CNG
Comfort Noise Generator
CNO
Cluster Name Object
CNR
Communication and Networking Riser
CO
Capacity Optimization
COA
Cloud-oriented Architecture
COB
Chip On Board
COBIT
Control Objectives for Information and Related Technologies
COBOL
Common Business oriented Language
COD
Capacity On Demand
COGS
Cost Of Goods Sold
CoIP
Communications Over Internet Protocol
COLD
Computer Output To Laser Disk
COLO
Colocation
COM
Component Object Model
Commerce XML
CXML or Commerce Extensible Markup Language
CompTIA
Computing Technology Industry Association
CONUS
Continental United States
COO
Chief Operating Officer or Cost of Ownership
COPE
Corporate-Owned, Personally-Enabled
COPPA
Children'S Online Privacy Protection Act
COPS
Common Open Policy Service Protocol
CorBA
Common Object Request Broker Architecture
Corporate VM
Corporate Virtual Machine
CorS
Cross-origin Resource Sharing
COS
Class Of Service
COTS
Commercial Off-The-Shelf
CP
Configuration Profile, Cost Performance, or Control Plane
CPE
Customer Premises Equipment
CPG
Consumer Packaged Goods
CPIM
Certified In Production and Inventory Management
CPIO
Chief Process and Innovation Officer
CPL
Computer Pidgin Language
CPM
Corporate Performance Management, Certified Purchasing Manager, or Critical Path Method
CPNI
Customer Proprietary Network Information
CPO
Chief Procurement Officer
CPOE
Computerized Physician order Entry
CPPS
Cost Performance Products Sector
CPRM
Content Protection For Removable Media
CPS
Cycles Per Second
CPT
Current Procedural Terminology
CPU
Central Processing Unit
CPW
Commercial Processing Workload
CQA
Certified Quality Auditor
CQE
Certified Quality Engineer
CR
Cognitive Radio
CRA
Customer Relationship Analysis
CRAC
Computer Room Air Conditioning Unit
CRAH
Computer Room Air Handler
CRAM
Challenge-Response Authentication Mechanism
CRC
Cyclic Redundancy Check
Credit CARD Act
Credit Card Accountability, Responsibility, and Disclosure Act Of 2009
CRL
Certificate Revocation List
CRM
Customer Relationship Management
CRO
Chief Risk Officer
CRP
Capacity Requirements Planning
CRT
Cathode Ray Tube
CRUSH
Controlled Replication Under Scalable Hashing
CSA
Cloud Security Alliance
CSAT
Customer Satisfaction
CSBB
Client Side Browser Based
CSC
Customer Service Chat
CSD
Circuit Switched Data
CSI
Customer Satisfaction Index
CSIP
Continual Service Improvement Planning
CSIRT
Computer Security Incident Response Team
CSMA/CA
Carrier Sense Multiple Access/Collision Avoidance
CSMA/CD
Carrier Sense Multiple Access/Collision Detect
CSO
Chief Security Officer
CSP
Content Security Policy or Commerce Service Provider
CSR
Corporate Social Responsibility
CSRF
Cross-Site Request Forgery
CSS
Cascading Style Sheets
CSV
Comma-Separated Values File
CTC
Click-To-Talk
CTCI
Computer-To-Computer Interface
CTD
Cumulative Trauma Disorder
CTFT
Color Thin Film Transistor
CTI
Computer-Telephony Integration
CTO
Chief Technology Officer
CTP
Cloudtrust Protocol or Common Test Platform
CTR
Clickthrough Rate
CUE
Carbon Usage Effectiveness
CULV
Consumer Ultra-Low Voltage
Custom TLD
Custom Domain Name Suffix
CVC
Calibrated Vectored Cooling
CVE
Common Vulnerabilities and Exposures
CVO
Chief Visionary Officer
CVS
Concurrent Versions System
CVSS
Common Vulnerability Scoring System
CVV
Card Verification Value
CWDM
Coarse Wavelength Division Multiplexing
CWE
Common Weakness Enumeration
CWF
Common Working File
CWNP
Certified Wireless Networking Professional
CX
Consumer Experience
CXO
Chief Experience Officer

A quick reference guide for Information Technology (IT) related acronyms and abbreviations.

As a service to IT personnel everywhere (and also for ourselves) we’ve compiled a comprehensive list of IT-related acronyms and abbreviations.

Acronyms can be pronounced as words, like NASA and UNESCO; as individual letters, like FBI, TNT, and ATM; or as both letters and words, like JPEG (pronounced JAY-peg).

Abbreviations formed from a string of initials and usually pronounced as individual letters are more specifically called initialisms or alphabetisms.

No matter how you refer to these IT-related terms, please use our quick reference guide or search TechTerms.com to help decode the world of IT abbreviations and acronyms.

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