A systematic approach to managing all changes made to a product or system, ensuring that no unnecessary changes are made, all changes are documented, and that services are not unnecessarily disrupted.

"Effective change control management is essential for minimizing the impact of changes in IT projects and ensuring that only approved modifications are implemented."

A technology that enables voice communication and multimedia sessions over the internet, allowing users to make phone calls, video calls, and send messages using IP-based networks, often providing cost savings and flexibility compared to traditional telephony systems.

"Skype and Zoom are popular VoIP services for video conferencing and online meetings."

A data structure that implements an associative array abstract data type, a structure that can map keys to values.

"A hash map uses a hash function to compute an index into an array of buckets or slots, from which the desired value can be found."

A discipline that incorporates aspects of software engineering and applies them to infrastructure and operations problems.

"The main goals of SRE are to create scalable and highly reliable software systems."

A term describing software, hardware, or systems that work as expected without requiring additional configuration or modification by the user.

"Users appreciate products that 'just work' right out of the box, without the need for troubleshooting or setup."