# Glossary

Extended A-Z definitions of terms used across ARENA360 documentation.

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For core concepts with detailed explanations, see the [Terminology](https://docs.lsports.eu/u/getting-started/terminology) page.
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## A

**Abandoned** : A fixture that has been permanently stopped and will not resume. All open bets are typically refunded.

**Asian Handicap (AH)** : A betting market that eliminates the draw option by giving one team a head start. Lines are expressed as decimals (e.g., -1.5, +0.5).

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## B

**Baseline** : The central line in a handicap or totals market from which other lines are calculated.

**Bet** : The potential outcome for a suggested market (e.g., "Home Win" in a 1X2 market).

**Bet Slip** : A collection of bets submitted by a player for placement.

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## C

**Calculated Odds** : Odds processed through margin calculations and displayed to end users. Contrast with Provider Odds.

**Coverage** : The extent to which fixtures, markets, or data points are available from a provider.

**CSM (Customer Success Manager)** : Your dedicated LSports contact for account management and support.

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## D

**Dead Heat** : When two or more selections tie in a race or event. Stakes are divided equally among tied selections.

**Delta Update** : A message containing only changed data rather than a full snapshot. Used for efficient data streaming.

**Distribution** : The data delivery service. Must be enabled before consuming RabbitMQ messages.

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## F

**Fixture** : A contained sport gathering within the larger sport context — whether a direct head-to-head event or an entire league competition.

**Fixture ID** : Unique numeric identifier for a fixture across all ARENA360 products.

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## H

**Heartbeat** : A periodic message sent to confirm the connection is active. Used for connection health monitoring.

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## I

**InPlay** : The framework in which all content is sent DURING the fixture's execution. Also called "live" or "in-running."

**Interrupted** : A fixture temporarily stopped (e.g., due to weather) that may resume.

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## K

**Keep Alive** : A message sent to maintain connection state during periods of low activity.

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## L

**Line** : The handicap or total value in a market (e.g., 2.5 goals in Over/Under).

**Livescore** : An accompanying context which sheds light on the fixture's score, stats, lineups, and more.

**Lost Coverage** : When data feed for a fixture becomes unavailable during an event.

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## M

**Mainline** : The primary line in a market with multiple line options. Typically the most liquid line.

**Margin** : The built-in cut for sportsbooks to ensure profit, as well as a self-safety measure. Also known as "overround" or "vig."

**Market** : A "question" presented by a sportsbook to end users regarding fixture outputs — score-related, statistics, player-oriented, or league conclusions.

**Market ID** : Unique numeric identifier for a market type.

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## N

**NSY (Not Started Yet)** : Fixture status indicating the event has not begun.

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## O

**Odds** : A numeric representation of the sportsbook's probability for each bet to occur. Expressed in decimal format.

**Outright** : A long-term market on an overall competition result (e.g., league winner, top scorer).

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## P

**Package** : A subscription configuration defining which data you receive.

**Package ID** : Unique identifier for your data subscription.

**Participant** : A team, player, or competitor in a fixture.

**PreMatch** : The framework in which all content (odds, metadata, etc.) is sent BEFORE the fixture starts. Contrast with InPlay.

**Provider** : A source of odds or data (e.g., Bet365, Pinnacle).

**Provider Odds+** : Feature providing access to raw provider odds before margin calculations.

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## Q

**Queue** : A RabbitMQ message queue. Your queue name is `_YOUR_PACKAGE_ID_`.

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## R

**RabbitMQ** : Message broker used for real-time data streaming.

**Refund** : Returning stakes when a bet is voided (e.g., event cancelled).

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## S

**Safe Message** : A feature ensuring guaranteed message delivery without data loss.

**Selection** : A specific bet option within a market (e.g., "Over 2.5 Goals").

**Settlement** : A unique message that guides sportsbooks on how to operate with bets placed by end users, based on predefined logic considering fixture aspects (score, stats, player outputs).

**Snapshot** : A complete data export at a point in time. Used for initial sync.

**Suspension** : When odds are temporarily unavailable for betting.

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## T

**Tip** : A betting recommendation based on statistical analysis.

**Trading Floor** : The TRADE monitoring interface for live fixture management.

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## U

**Under/Over (U/O)** : A market betting on whether a statistic will be above or below a specified line.

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## V

**Virtual Host (vhost)** : A logical partition in RabbitMQ. TRADE uses `Customers`, ENGAGE uses `fixtures` and `tips`.

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## W

**Widget** : An embeddable UI component for displaying data on external platforms.