Activision: Inside the Publisher and Studios Behind Call of Duty
Activision is one of the oldest and most influential publishers in video game history. Founded in 1979, Activision existed before PlayStation, Xbox, Steam and most of the modern gaming industry took shape.
Today, Activision is best known for Call of Duty, but describing the company simply as “the Call of Duty developer” is misleading.
Call of Duty is not created by one studio.
Instead, Activision coordinates a large development network that includes Infinity Ward, Treyarch, Raven Software, Beenox, High Moon Studios, Sledgehammer Games, Activision Shanghai and Demonware.
Each studio contributes different expertise. Some lead premium Call of Duty games. Others specialise in Zombies, Warzone, PC development, online infrastructure or additional production.
Activision itself has also changed considerably. Microsoft completed its acquisition of Activision Blizzard in October 2023, bringing Activision into the wider Microsoft Gaming organisation.
However, Activision remains an identifiable company with its own leadership, studios and publishing identity.
Understanding modern Activision therefore means looking beyond the logo and understanding the developers working behind it.
Activision was founded long before Call of Duty
Activision was founded in 1979, when the commercial video game industry looked completely different.
There were no digital stores.
There was no Steam.
Online multiplayer did not exist.
Live-service games were decades away.
Games were distributed primarily through physical media, while developers worked with hardware that offered only a fraction of the computing power available today.
Activision became one of the companies that helped establish the independent video game publishing business.
Over the following decades, the publisher expanded across different platforms and genres.
Its catalogue eventually included action games, platformers, licensed properties, sports games and major original franchises.
However, one series would eventually dominate the Activision identity.
Call of Duty.
Activision and Call of Duty started with Infinity Ward
The original Call of Duty launched in 2003.
Infinity Ward developed the game, while Activision published it.
The relationship quickly became important.
Activision acquired the remaining ownership of Infinity Ward during the same year, bringing the developer fully into its organisation.
Infinity Ward therefore sits at the foundation of the Call of Duty franchise.
The studio would later become most closely associated with Modern Warfare, one of the most recognisable branches of Call of Duty.
More than two decades later, Infinity Ward remains one of Activision’s most important development studios.
Activision still relies heavily on Infinity Ward
Infinity Ward helped establish many ideas that became synonymous with Call of Duty.
Cinematic military campaigns became a major part of the series.
Competitive multiplayer became increasingly important.
Modern Warfare pushed Call of Duty into a much larger global audience.
The studio’s influence consequently reaches far beyond individual releases.
In 2026, Infinity Ward again leads a major Call of Duty project with Modern Warfare 4.
However, the way Activision builds a Call of Duty game today is dramatically different from the production structure behind the original 2003 release.
Infinity Ward may lead a game, but it no longer works alone.
Activision built Call of Duty around a network of studios
The modern Call of Duty development structure includes numerous Activision teams.
Steam currently credits:
- Treyarch
- Raven Software
- Beenox
- High Moon Studios
- Sledgehammer Games
- Infinity Ward
- Activision Shanghai
- Demonware
That is a remarkable number of developers for a single franchise.
However, modern Call of Duty is much more than one campaign and one multiplayer mode.
The wider ecosystem can include:
premium games,
Warzone,
Zombies,
DMZ,
seasonal updates,
online progression,
PC development,
backend infrastructure,
security systems,
anti-cheat technology,
and live-service content.
Different Activision studios therefore work on different areas of the same ecosystem.
Treyarch became one of Activision’s most important studios
Treyarch became another major pillar of Call of Duty.
Where Infinity Ward became strongly associated with Modern Warfare, Treyarch built its reputation around Black Ops.
Black Ops developed its own identity.
Its games introduced different characters, timelines, settings and gameplay ideas.
The series also became home to one of Call of Duty’s most recognisable experiences.
Zombies.
Treyarch’s contribution eventually became important enough that Black Ops developed a following almost independent of the wider Call of Duty name.
Activision and Treyarch turned Zombies into a major franchise feature
Call of Duty Zombies started as an additional mode.
It did not stay that way.
Treyarch expanded Zombies through increasingly complicated maps, characters, progression systems and hidden storylines.
Players began searching for Easter eggs.
Communities worked together to solve puzzles.
Characters developed long-running stories.
Zombies consequently became a major part of Call of Duty rather than an optional side mode.
Treyarch’s experience with Zombies also became useful outside games where it served as the main developer.
Activision could assign that expertise to other Call of Duty projects.
This collaborative approach would become increasingly common.
Raven Software became another major Activision contributor
Raven Software has a long history that extends far beyond modern Call of Duty.
However, its role inside Activision increasingly became connected with the franchise.
Raven contributed to campaigns and other Call of Duty projects before becoming particularly important to Warzone.
That gave the studio a crucial position within the modern Activision development structure.
Warzone was not simply another premium Call of Duty game.
It changed the relationship between Activision and its players.
Activision used Warzone to create a persistent Call of Duty ecosystem
Before Warzone, Call of Duty primarily revolved around premium releases.
A new game launched.
Players moved to it.
Then another release followed.
Warzone changed that pattern.
The free-to-play game could continue operating while different premium Call of Duty titles came and went.
Weapons could change.
Maps could evolve.
New seasons could arrive.
Different premium games could feed content into the wider platform.
Activision therefore gained a persistent Call of Duty experience rather than depending entirely on one annual product.
Raven Software became one of the studios most closely connected with maintaining that environment.
Sledgehammer Games expanded Activision’s lead-development capacity
Sledgehammer Games became another studio capable of leading major Call of Duty releases.
That expanded Activision’s development capacity significantly.
Infinity Ward could work on one project.
Treyarch could develop another.
Sledgehammer could lead another release.
Meanwhile, additional Activision studios could support those projects.
The original Call of Duty rotation was relatively easy to understand.
Modern development has become more complicated.
Studios now contribute across projects rather than remaining completely isolated.
Sledgehammer Games remains an important part of that system.
Activision needs several studios because Call of Duty has become enormous
Modern Call of Duty development involves far more than building a shooter and shipping it.
Activision may simultaneously need people working on:
campaign design,
competitive multiplayer,
Warzone,
Zombies,
DMZ,
PC optimisation,
network technology,
security,
anti-cheat,
animation,
art,
audio,
cinematics,
QA,
seasonal updates,
live operations,
and future games.
Several of these projects can exist at the same time.
One Activision studio could not realistically handle everything while maintaining Call of Duty’s current release and update schedule.
The large studio network is therefore not accidental.
It has become essential.
Beenox gives Activision specialist Call of Duty PC expertise
Beenox has become particularly important to Call of Duty on PC.
PC development presents challenges that differ from consoles.
Players use different processors.
Different graphics cards.
Different amounts of memory.
Different monitors.
Different resolutions.
Different input devices.
Some players want ultrawide support.
Others use extremely high refresh rates.
Graphics scaling, advanced settings and hardware compatibility also require specialist attention.
Beenox has repeatedly contributed to Call of Duty PC development.
For Modern Warfare 4, the studio works alongside Infinity Ward on the PC version.
That gives Beenox an important role within Activision’s Call of Duty organisation.
Activision uses Beenox for more than traditional support work
Calling Beenox merely a support studio does not accurately describe its role.
The developer has worked on numerous games throughout its history.
Within modern Activision, however, Call of Duty has become increasingly important.
Beenox appears repeatedly in development credits.
Its PC expertise is particularly valuable because Call of Duty now reaches players across several PC storefronts and hardware configurations.
A poor PC version can affect reviews, player retention and the reputation of the wider franchise.
Activision therefore benefits from maintaining a studio with specialist PC development experience.
High Moon Studios contributes to major Activision projects
High Moon Studios is another experienced developer within Activision.
Some players may remember the studio for its earlier Transformers games.
More recently, High Moon has regularly contributed to Call of Duty.
The studio appears alongside Activision’s larger Call of Duty teams across multiple projects.
Its work demonstrates an important part of modern AAA development.
The studio whose logo appears most prominently is rarely the only developer involved.
Additional teams may contribute art, technology, content, engineering or production work.
High Moon forms part of that broader Activision development network.
Activision Shanghai makes Call of Duty a global production
Activision Shanghai adds another geographic dimension to Call of Duty development.
The studio operates from China and has contributed to several franchise projects.
This highlights how global Call of Duty production has become.
Development is no longer confined to one American office.
Activision can coordinate teams across different countries and time zones.
That provides access to a broader pool of talent.
However, it also increases organisational complexity.
Modern Call of Duty requires large-scale collaboration between developers separated by thousands of kilometres.
Demonware provides Activision’s invisible Call of Duty technology
Demonware is different from many other studios in the Activision network.
Most players will never recognise its work visually.
Demonware specialises in online infrastructure.
Modern Call of Duty depends heavily on systems operating behind the game.
Players need accounts.
Matchmaking must function.
Progression must be recorded.
Online identities need to remain connected.
Large populations need to connect simultaneously.
Live-service content needs backend support.
Those systems become especially important for Warzone and modern multiplayer.
Demonware contributes the technology that helps make those experiences possible.
Activision became increasingly dependent on Demonware
Demonware was founded in 2002.
It later became part of Activision.
Its importance grew as Call of Duty became increasingly connected.
Older games could operate largely as standalone products.
Modern Call of Duty constantly communicates with online services.
Players expect progression to persist.
Friends need to remain connected across platforms.
Matchmaking must work quickly.
Seasonal content needs continuous support.
A major launch can place enormous demand on infrastructure.
As a result, Demonware has become one of Activision’s most important technical organisations.
Activision’s Call of Duty studios have different strengths
The eight studios associated with Call of Duty should not be treated as interchangeable development teams.
Each has developed its own areas of experience.
Infinity Ward remains most closely associated with Modern Warfare.
Treyarch is strongly connected with Black Ops and Zombies.
Raven Software has played an important role in Warzone and collaborative development.
Sledgehammer Games can lead premium Call of Duty releases.
Beenox provides significant PC development expertise.
High Moon Studios contributes to major Activision productions.
Activision Shanghai supports the global development organisation.
Demonware specialises in online infrastructure.
Their responsibilities can change between projects.
However, those different strengths help explain why Activision continues using such a broad studio network.
Activision has more Call of Duty developers than Steam shows
Steam’s developer list gives players a useful overview, but it does not show every team involved with Call of Duty.
Activision also uses central technology groups, QA teams and other specialist organisations.
Some projects require additional studios for specific platforms.
Others may use teams for art, cinematics or technical development.
A major Call of Duty release can therefore involve far more people than the main developer list suggests.
This is especially true as Activision supports several platforms simultaneously.
Modern Warfare 4 demonstrates the Activision studio model
Modern Warfare 4 provides a useful example of how Activision currently develops Call of Duty.
Infinity Ward leads the project.
Beenox works with Infinity Ward on the PC version.
Other Activision studios contribute to development.
That means describing Modern Warfare 4 as an Infinity Ward game is correct.
However, it is not the entire story.
The final release depends on a much larger network.
This distinction has become increasingly important as AAA games grow in scale.
Activision transformed Call of Duty from a series into an ecosystem
Older Call of Duty releases were much easier to separate.
A player bought one game.
That game appeared independently in the player’s library.
Then another Call of Duty arrived.
Modern Activision increasingly treats Call of Duty as a connected ecosystem.
Warzone continues between premium games.
Accounts persist.
Seasonal content arrives.
Different games can share wider systems.
The Call of Duty application itself can act as a hub.
This keeps players connected to the franchise instead of asking them to start from zero every year.
Activision gains major advantages from a shared Call of Duty platform
The ecosystem approach makes commercial sense.
Activision already has an enormous Call of Duty audience.
When a new premium game arrives, the company can promote it directly to players who are already using Call of Duty.
Warzone gives players another reason to remain active.
Seasonal updates encourage repeat engagement.
Accounts connect different experiences.
Friends remain inside the same broader network.
Activision therefore maintains an ongoing relationship with players rather than depending entirely on one launch each year.
The Activision platform approach also has drawbacks
The same system can become confusing.
A player may not immediately understand which Call of Duty components are installed.
Storage management can become complicated.
Steam statistics may represent several experiences at once.
Reviews can cover different generations of Call of Duty.
A player interested only in Warzone may still interact with a larger Call of Duty interface.
Convenience for Activision does not always mean simplicity for the player.
That tension remains one of the challenges surrounding the modern franchise.
Activision is still more than Call of Duty
Call of Duty dominates the current Activision identity.
However, the publisher has a much broader history.
Its catalogue includes franchises and games such as:
Crash Bandicoot.
Spyro.
Tony Hawk.
Sekiro: Shadows Die Twice.
These properties are very different from Call of Duty.
They show that Activision has spent decades working across multiple genres.
Some games came from internal studios.
Others were developed externally and published by Activision.
That distinction matters when discussing the company accurately.
Activision published Sekiro but FromSoftware developed it
Sekiro: Shadows Die Twice is a good example of the difference between developer and publisher.
FromSoftware developed Sekiro.
Activision published the game in major markets.
Activision therefore played an important role without being the studio responsible for creating the game itself.
This is why publisher and developer should never automatically be treated as the same thing.
Activision can publish an externally developed game.
It can publish a game from one of its own studios.
Or it can coordinate numerous internal studios on something as large as Call of Duty.
Crash Bandicoot shows another side of Activision
Crash Bandicoot represents a completely different part of Activision’s catalogue.
The franchise focuses on colourful platforming rather than military action.
Crash reaches players who may have no interest in Call of Duty.
This diversity historically helped large publishers reach different audiences.
It also makes Activision’s history much broader than its modern reputation sometimes suggests.
For some players, Crash is as recognisable as many of Activision’s more serious franchises.
Spyro expanded Activision’s platforming catalogue
Spyro provides another example.
The Spyro Reignited Trilogy brought a classic platforming series to modern systems.
Its colourful fantasy setting is almost the opposite of Call of Duty.
Yet both have existed within the wider Activision catalogue.
The contrast illustrates how varied a major publisher’s portfolio can become.
Activision’s modern business may revolve heavily around Call of Duty, but its publishing history extends across many different gaming communities.
Tony Hawk became one of Activision’s defining franchises
Tony Hawk’s Pro Skater was another major part of Activision’s history.
The series combined skateboarding with arcade-style movement, tricks, high scores and memorable soundtracks.
For many players, Tony Hawk became one of the defining gaming franchises of the late 1990s and early 2000s.
Its success demonstrates that Activision was already capable of building culturally significant gaming brands before Call of Duty became dominant.
Activision survived almost five decades of industry change
Few major gaming companies founded in the 1970s remain as recognisable today.
Activision survived enormous changes.
The cartridge era.
Home computers.
Nintendo and Sega.
PlayStation.
Xbox.
Online multiplayer.
Steam.
Digital distribution.
Mobile gaming.
Free-to-play.
Battle royale.
Cross-platform gaming.
Live services.
Each period required publishers to change how they worked.
Activision adapted repeatedly.
Sometimes that meant buying studios.
Sometimes it meant investing in new franchises.
Eventually, it meant transforming Call of Duty into a persistent online ecosystem.
Activision Blizzard changed the corporate structure
A major corporate transformation came in 2008, when Activision and Vivendi Games combined to create Activision Blizzard.
Activision and Blizzard remained distinct brands inside the larger company.
Call of Duty stayed associated with Activision.
Warcraft, Diablo and later Overwatch remained tied to Blizzard.
King added a major mobile-gaming business.
Together, these businesses created one of the largest gaming companies in the world.
That corporate structure remained until another major change arrived.
Microsoft.
Microsoft acquired Activision Blizzard in 2023
Microsoft completed its acquisition of Activision Blizzard on 13 October 2023.
The transaction brought Activision, Blizzard and King into Microsoft’s gaming organisation.
That changed Activision’s ownership but did not erase its identity.
The Activision brand remained.
Call of Duty remained associated with Activision.
The studios retained their names.
Activision continued maintaining its own company structure.
The company therefore entered another phase of its history rather than disappearing.
Activision remains distinct inside Microsoft Gaming
Microsoft ownership can create some confusion around development attribution.
Infinity Ward did not suddenly become Xbox Game Studios.
Neither did Treyarch.
Raven Software, Beenox, Sledgehammer Games and the other developers remain associated with Activision.
The corporate hierarchy is simply larger now.
Microsoft sits above the wider gaming organisation.
Activision operates within that structure.
Activision’s individual studios then develop the games.
Understanding those levels helps avoid incorrectly attributing Call of Duty development to Microsoft or Xbox Game Studios directly.
Activision still has its own leadership
Activision also continues operating with identifiable company leadership.
Rob Kostich serves as Activision President.
Other executives oversee operations, development and Call of Duty.
This supports the idea that Activision remains an active organisation rather than merely a label owned by Microsoft.
Its teams continue developing and publishing games while operating within the wider Microsoft Gaming structure.
Activision has built a permanent Call of Duty production system
Perhaps the most remarkable part of modern Activision is that Call of Duty development effectively never stops.
While players are experiencing one season, other teams may already be working on:
future seasonal content,
the next premium Call of Duty,
Warzone updates,
new Zombies experiences,
PC improvements,
backend technology,
security systems,
and unannounced future projects.
Several production cycles overlap.
Activision therefore operates Call of Duty more like an ongoing production network than a conventional sequence of isolated games.
Activision can develop several parts of Call of Duty simultaneously
The multi-studio structure makes parallel development possible.
Infinity Ward can lead Modern Warfare.
Treyarch can work on Black Ops.
Raven can contribute to Warzone.
Beenox can concentrate on PC.
Demonware can maintain online services.
High Moon Studios and Activision Shanghai can contribute elsewhere.
That structure gives Activision tremendous development capacity.
It also means coordinating Call of Duty is probably as important as simply designing the individual games.
Activision depends on specialist expertise
One of the biggest advantages of the studio network is specialisation.
Infinity Ward has decades of first-person shooter experience.
Treyarch understands Black Ops and Zombies.
Raven has extensive Warzone knowledge.
Beenox understands Call of Duty on PC.
Demonware specialises in online technology.
Other Activision teams bring additional development, art and engineering experience.
Activision does not need every studio to know everything.
Instead, different specialists can contribute where they are strongest.
Activision’s greatest asset may be its developers
Call of Duty is an enormously valuable franchise.
However, intellectual property cannot make a game by itself.
Activision’s studios contain decades of experience in:
game design,
multiplayer,
campaign production,
Zombies,
battle royale,
PC optimisation,
network technology,
live services,
art,
animation,
audio,
cinematics,
QA,
and online infrastructure.
Those capabilities exist in people and teams.
Losing that expertise would be much harder to replace than simply owning the Call of Duty trademark.
Activision’s development network may therefore be one of its most important assets.
Why Activision still matters in 2026
Activision connects several eras of gaming history.
The company started in 1979.
Call of Duty arrived in 2003.
Activision Blizzard formed in 2008.
Microsoft completed its acquisition in 2023.
Call of Duty continues evolving in 2026.
The technology changed.
The platforms changed.
The business models changed.
The ownership changed.
Activision adapted to all of them.
Activision is more than the company behind the Call of Duty logo
Understanding Activision means understanding its studios.
Infinity Ward remains the foundation of Call of Duty and the developer most strongly connected with Modern Warfare.
Treyarch built Black Ops into another major branch and became synonymous with Zombies.
Raven Software grew into an important Warzone and collaborative development studio.
Sledgehammer Games became capable of leading premium releases.
Beenox developed an important PC role.
High Moon Studios contributes to major productions.
Activision Shanghai extends the development network globally.
Demonware provides online technology operating behind the scenes.
Those studios explain why Call of Duty development has become so large.
Activision is the organisation around the developers
Activision should therefore not simply be described as “the developer of Call of Duty”.
It is better understood as the publisher and development organisation surrounding the studios that build Call of Duty.
Sometimes Infinity Ward leads.
Sometimes Treyarch leads.
Sometimes Sledgehammer leads.
Raven may control an important part of the wider ecosystem.
Beenox may concentrate on PC development.
Demonware provides the online backbone.
Additional teams contribute wherever Activision needs them.
Modern Call of Duty exists because all of those pieces work together.
That is what Activision has become after almost five decades in gaming: not one studio, but a large interconnected development and publishing organisation behind one of the industry’s biggest franchises.