Software release life cycle

A software release life cycle is the sum of the stages of development and maturity for a piece of computer software: ranging from its initial development to its eventual release, and including updated versions of the released version to help improve software or fix bugs still present in the software.

History

Usage of the "alpha/beta" test terminology originated at IBM. As long ago as the 1950s (and probably earlier), IBM used similar terminology for their hardware development. "A" test was the verification of a new product before public announcement. "B" test was the verification before releasing the product to be manufactured. "C" test was the final test before general availability of the product. As software became a significant part of IBM's offerings, the alpha test terminology was used to denote the pre-announcement test and beta test was used to show product readiness for general availability. Martin Belsky, a manager on some of IBM's earlier software projects claimed to have invented the terminology. IBM dropped the alpha/beta terminology during the 1960s, but by then it had received fairly wide notice. The usage of "beta test" to refer to testing done by customers was not done in IBM. Rather, IBM used the term "field test".

Game

A game is structured form of play, usually undertaken for enjoyment and sometimes used as an educational tool. Games are distinct from work, which is usually carried out for remuneration, and from art, which is more often an expression of aesthetic or ideological elements. However, the distinction is not clear-cut, and many games are also considered to be work (such as professional players of spectator sports or games) or art (such as jigsaw puzzles or games involving an artistic layout such as Mahjong, solitaire, or some video games).

Key components of games are goals, rules, challenge, and interaction. Games generally involve mental or physical stimulation, and often both. Many games help develop practical skills, serve as a form of exercise, or otherwise perform an educational, simulational, or psychological role.

Attested as early as 2600 BC, games are a universal part of human experience and present in all cultures. The Royal Game of Ur, Senet, and Mancala are some of the oldest known games.

Cleveland Cavaliers

The Cleveland Cavaliers, also known as the Cavs, are an American professional basketball team based in Cleveland, Ohio. The Cavaliers compete in the National Basketball Association (NBA), as a member of the league's Eastern Conference Central Division. The Cavaliers are the only remaining charter member of the division (all the other Central Division teams joined later from the now-defunct Midwest Division).

The team began play in the league in 1970 as an expansion team. Home games are played at Quicken Loans Arena, which the team shares with the Cleveland Gladiators of the Arena Football League, and the Lake Erie Monsters of the American Hockey League. The Cavaliers have featured many NBA stars during their history, including All-Stars Austin Carr, Brad Daugherty, Zydrunas Ilgauskas, Mark Price, LeBron James, Kyrie Irving, Mo Williams and Kevin Love. Past NBA greats such as Nate Thurmond, Lenny Wilkens, Walt "Clyde" Frazier, and Shaquille O'Neal have also played in Cleveland (albeit near the end of their careers).

Boston Celtics

The Boston Celtics (/ˈsɛltɪks/) are an American professional basketball team based in Boston, Massachusetts. The Celtics compete in the National Basketball Association (NBA) as a member club of the league's Eastern Conference Atlantic Division. Founded in 1946 and one of eight NBA teams (out of 23 total teams) to survive the league's first decade, the team is currently owned by Boston Basketball Partners LLC. The Celtics play their home games at the TD Garden, which they share with the National Hockey League (NHL)'s Boston Bruins. The franchise's 17 championships are the most for any NBA franchise, and account for 24.6% of all NBA championships since the league's founding in 1946. As a percentage of championships won, the Celtics are the most successful franchise to date in the major four traditional North American professional sports leagues.

The Celtics have played the Lakers a record 12 times in the Finals, including their most recent appearances in 2008 and 2010, where the Celtics have won nine meetings (but only two since 1980). Four Celtics (Bob Cousy, Bill Russell, Dave Cowens and Larry Bird) have won the NBA Most Valuable Player Award for an NBA record total of 10 MVP awards. Their mascot 'Lucky the Leprechaun' is a nod to the team's Irish heritage and to Boston's historically large Irish population.

NBA playoffs

The National Basketball Association (NBA) playoffs are a best-of-seven elimination tournament among 16 teams in the Eastern Conference and Western Conference (called divisions, pre-1970), ultimately deciding the winner of the NBA Finals.

Format

The NBA announced the current revised playoff seeding system on September 8, 2015. Following the NBA regular season, eight teams in each conference qualify for the playoffs and are seeded one to eight.

The new format stipulates that the top eight teams in each conference, ranked in order by win-loss records, qualify for the playoffs. The NBA Board of Governors also announced the new tie-break criteria for playoff seeding and home-court advantage: head-to-head results between the tied teams is the first tie-breaker, and whether a team won its division championship is the second tie-breaker.

These seedings are used to create a bracket that determines the match-ups throughout the playoffs. Once the playoffs start, the bracket is fixed; teams are never "reseeded", unlike in the National Football League (NFL) and Major League Soccer (MLS) where the strongest remaining teams face the weakest teams in subsequent rounds. The first round of the NBA playoffs, or conference quarterfinals, consists of four match-ups in each conference based on the seedings (1–8, 2–7, 3–6, and 4–5). The four winners advance to the second round, or conference semifinals, with a match-up between the 1–8 and 4–5 winners and a match-up between the 2–7 and 3–6 winners. The two winners advance to the third round, or conference finals. The winner from each conference will advance to the final round, or the NBA finals.