software update
process of installing a new version of a program
Google Panda
update of Google's search results ranking algorithm
flag day
a change which requires a complete restart or conversion of a sizable body of software or data
Google Penguin
Google search engine algorithm update
over-the-air update
secure distribution of software, configuration settings, or encryption keys to electronic devices via an insecure connection
Google Hummingbird
search engine algorithm used by Google
Google Pigeon
Google's local search algorithm update