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Open source licences define how code may be used, modified, and redistributed. Permissive licences such as MIT impose relatively few conditions, while copyleft licences such as the GPL require derivative works to be released under the same terms, so teams need to check compatibility before adopting a dependency.

Backups follow the three-two-one rule: keep at least three copies of the data, store them on two different types of media, and place one copy off site. Following that pattern protects against hardware failure, accidental deletion, and ransomware alike.

Bitcoin was introduced in 2009 and became the first widely adopted decentralized digital currency. Its supply is capped at twenty-one million coins, and the network is secured through a proof-of-work mechanism. Because transfers do not require a bank or clearing house in the middle, cross-border payments can settle in minutes rather than business days, although confirmation times still vary with network load.

Cloud computing abstracts computing resources into services that can be rented on demand. Rather than purchasing servers in advance, a business can scale capacity with traffic, which substantially lowers the fixed costs and technical barriers faced by early-stage companies.

Accessibility work focuses on making a site parse correctly for assistive technology such as screen readers. Writing descriptive alternative text for images, maintaining sufficient contrast, and using a semantic heading hierarchy are among the most common improvements.