Ad Insertion Methods

Understanding how ads reach viewers in live streaming is fundamental. These methods determine latency, interactivity potential and viewer experience.

SGAI (Server-Guided Ad Insertion)

Server-Guided Ad Insertion is a hybrid architecture that combines the reliability of server-side stitching with the interactivity of client-side rendering. The server orchestrates ad decisions and timing while the client handles rendering, enabling interactive overlays, polls, and shoppable experiences impossible with pure SSAI. StreamLayer pioneered SGAI for live sports to deliver nonlinear and interactive ads without stream interruption.

SSAI (Server-Side Ad Insertion)

Server-Side Ad Insertion stitches ads directly into the video stream on the server before delivery. This prevents ad blockers and ensures a seamless playback experience but limits interactivity since the ad is baked into the stream. SSAI is the dominant method for CTV and OTT platforms.

CSAI (Client-Side Ad Insertion)

Client-Side Ad Insertion requests and renders ads on the viewer's device. It offers rich interactivity and precise measurement but is vulnerable to ad blockers and can cause buffering or latency during ad transitions.

DAI (Dynamic Ad Insertion)

Dynamic Ad Insertion is a broad term covering any technology that inserts targeted ads into video content in real time. DAI encompasses both SSAI and CSAI approaches and enables personalized ad experiences based on viewer data, geography and device.

VAST (Video Ad Serving Template)

An IAB standard XML schema that defines how video ad servers communicate with video players. VAST enables programmatic video ad serving by providing a universal protocol for ad request, delivery, tracking and error reporting across platforms.

VPAID (Video Player-Ad Interface Definition)

A legacy IAB standard that enables rich interactive video ad experiences by allowing the ad to communicate with the video player. VPAID supports features like overlays, galleries and games within ads but has been largely deprecated in favor of SIMID due to security and performance concerns.

SIMID (Secure Interactive Media Interface Definition)

The IAB's successor to VPAID, SIMID provides a secure sandbox for interactive ad experiences. It separates ad logic from the video player, improving security and performance while still enabling rich interactivity. SIMID is the emerging standard for interactive CTV advertising.

Ad Formats & Placements

Modern live sports advertising extends far beyond traditional commercial breaks. These formats allow brands to reach engaged viewers without disrupting the viewing experience.

Nonlinear Ads

Ads displayed alongside live video content without interrupting playback. Nonlinear formats include overlays, L-bars, lower thirds and side panels that appear during gameplay. They maintain viewer engagement because the stream continues uninterrupted while the brand message is delivered contextually.

Pause Ads

A premium ad format triggered when a viewer pauses the live stream. Pause ads deliver high-impact brand messages at a moment of viewer-initiated attention. They disappear automatically when playback resumes, creating a non-intrusive experience that commands attention without disruption.

L-Bar Ad

An L-shaped ad overlay that frames the video content along the bottom and one side of the screen. L-bar ads provide significant creative space while keeping the live action visible, commonly used during key moments in sports broadcasts.

Overlay Ad

A transparent or semi-transparent ad layer displayed on top of video content. Overlays range from simple banner graphics to rich interactive elements with clickable calls to action. They are a core nonlinear format for live sports.

Squeeze-Back

A format that reduces the live video to a smaller window while displaying ad content in the remaining screen space. Also called picture-in-picture advertising, squeeze-backs keep viewers connected to the action while providing premium ad real estate.

Lower Third

An ad or information bar occupying the bottom third of the screen, overlaying the video content. Lower thirds are a staple of broadcast television adapted for streaming, delivering brand messages and scores without obscuring the main action.

In-Play Ads

Ads served during active gameplay rather than during breaks or timeouts. In-play ads are typically nonlinear formats like overlays, L-bars or squeeze-backs that appear during live action, capitalizing on peak viewer attention.

Key Moment Ads

Ads triggered by real-time in-game events such as goals, touchdowns, home runs or penalties. Key moment advertising uses SGAI to detect high-emotion events and serve contextually relevant ads when viewer attention and emotional engagement peak, driving significantly higher recall and interaction rates.

Shoppable Ads

Interactive ad experiences that allow viewers to browse and purchase products directly within the video player. Shoppable ads integrate e-commerce functionality into the streaming experience, enabling instant purchases triggered by on-screen content without leaving the broadcast.

Streaming & Distribution

The streaming landscape includes multiple platforms and delivery models. Understanding these is essential for effective ad strategy across devices and channels.

CTV (Connected TV)

Any television set connected to the internet, either natively as a smart TV or via a streaming device like Roku, Fire TV, Apple TV or gaming console. CTV is the fastest-growing advertising channel, offering the impact of big-screen TV with the targeting precision of digital.

OTT (Over-The-Top)

Content delivered via the internet bypassing traditional cable and satellite distribution. OTT encompasses all streaming services and apps, whether viewed on CTV, mobile, desktop or tablet. OTT advertising reaches cord-cutters and cord-nevers who have abandoned traditional TV.

FAST (Free Ad-Supported Streaming TV)

Streaming services that offer free content supported entirely by advertising, typically organized in linear channel formats. FAST platforms like Pluto TV, Tubi and Samsung TV Plus are the fastest-growing segment of CTV, creating massive new ad inventory for live sports.

Live Linear

Content broadcast in real time following a scheduled programming sequence, as opposed to on-demand viewing. Live linear streaming brings the traditional TV broadcast model to digital platforms, critical for live sports where real-time viewing drives engagement and ad value.

VOD (Video On Demand)

Content available for viewing at the viewer's convenience rather than at a scheduled broadcast time. VOD includes AVOD (ad-supported), SVOD (subscription) and TVOD (transactional) models. Highlights, replays and shoulder content in sports are typically served via VOD.

Measurement & Monetization

Effective ad monetization requires understanding the metrics and models that drive revenue in streaming environments.

CPM (Cost Per Mille)

The cost an advertiser pays per one thousand ad impressions. CPM is the standard pricing model for video advertising and varies significantly by format, with interactive and nonlinear SGAI ads commanding premium CPMs due to higher engagement rates.

CPE (Cost Per Engagement)

A pricing model where advertisers pay only when viewers actively interact with an ad through clicks, polls, trivia responses or other actions. CPE aligns advertiser spend with actual audience engagement rather than passive impressions.

Ad Pod

A group of ads served sequentially within a single ad break, similar to a commercial break on traditional TV. Ad pods in streaming are typically shorter than broadcast TV, with two to four ads per pod being the standard for maintaining viewer attention.

Fill Rate

The percentage of available ad inventory that is actually filled with paid advertising. Fill rate is a critical metric for streaming platforms, with unfilled ad slots representing lost revenue. SGAI nonlinear formats help increase fill rate by creating new inventory during gameplay.

Unmonetized Minutes

Viewing time during a live broadcast that generates no ad revenue. In live sports, the majority of gameplay minutes are unmonetized under traditional ad-break models. Nonlinear and in-play ad formats from StreamLayer convert these minutes into premium inventory.

Fan Engagement & Interactivity

Interactive features transform passive viewers into active participants, increasing engagement metrics and creating new advertising opportunities.

Second Screen

The use of a mobile device or tablet alongside TV viewing for complementary content like stats, social media or interactive features. Second-screen experiences split viewer attention across devices. StreamLayer's single-screen approach keeps all engagement on the primary viewing device.

Single-Screen Interactivity

Interactive features delivered directly within the video player on the same screen as the broadcast, eliminating the need for a second device. Single-screen interactivity keeps viewer attention focused and enables seamless transitions between content and engagement elements.

Gamification

The application of game mechanics like points, leaderboards, predictions and challenges to the viewing experience. Gamification in live sports streaming increases session duration and creates high-engagement ad inventory through sponsored games, trivia and prediction challenges.

Social Viewing

Features that enable real-time social interaction between viewers during a live broadcast, including chat, reactions, watch parties and shared predictions. Social viewing increases engagement and session time while creating contextual advertising opportunities.

Industry Standards & Infrastructure

These standards and frameworks govern how the digital advertising ecosystem operates across platforms and devices.

IAB (Interactive Advertising Bureau)

The industry body that develops technical standards, guidelines and best practices for digital advertising. IAB standards like VAST, SIMID and Open Measurement are essential for interoperability across the ad tech ecosystem.

OMID (Open Measurement Interface Definition)

An IAB Tech Lab standard that provides a common SDK for third-party viewability and verification measurement across devices. OMID enables consistent measurement of ad viewability and attention on CTV, mobile and web without requiring multiple vendor SDKs.

Programmatic Advertising

The automated buying and selling of ad inventory using real-time bidding and algorithmic decision-making. Programmatic advertising in CTV and live sports streaming enables data-driven targeting, dynamic pricing and efficient campaign management at scale.