Modernize the mainframe at the pace your business can support
Capgemini ·
Mainframe modernization doesn’t have to mean risky, large-scale replacement. Discover how Capgemini and Oracle help organizations modernize at their own pace through rehosting, cloud-native transformation, phased migration, and AI-ready data strategies. The post Modernize the mainframe at the pace your business can support appeared first on Capgemini .
Reliability is not the problem. The emerging challenge is that the environment surrounding the mainframe is changing:
The question, then, is not whether to modernize, but how to do so without introducing unnecessary risk to essential operations.
Traditional programs often frame modernization as binary; retain the mainframe or replace it. That mindset can push organizations toward large-scale rewrites or platform replacements that take years to deliver meaningful business value, while increasing cost, disruption, and the risk of losing decades of proven business logic.
A more practical approach starts at the portfolio level, asking which outcomes makes sense for each application:
The answers will vary across the portfolio. The modernization approach should too.
The Capgemini and Oracle Mainframe Modernization Factory provides organizations with two complementary paths, depending on what each workload needs.
Oracle Native Rehost enables enterprises can move common business-oriented language (COBOL), customer information control system (CICS), information management system (IMS), Db2, virtual storage access method (VSAM), and batch workloads to Oracle Cloud Infrastructure with minimal code changes. Oracle ART Workbench and Oracle Tuxedo ART Runtime help preserve existing functionality while reducing dependence on traditional mainframe infrastructure.
This path is well suited to applications that remain valuable but do not require significant business-process redesign. Organizations can reduce operating complexity, accelerate cloud adoption, and establish a foundation for future improvements – without immediately rewriting everything at once.
Oracle Native Modernization focuses investment where transformation can create greater strategic value. Application discovery, dependency analysis, business-rule extraction, and domain decomposition help identify opportunities for application programming interfaces (APIs), microservices, event-driven processing, real-time analytics, and cloud-native services.
Together, these paths allow organizations to make modernization decisions according to the value and needs of each workload, preserving what works while investing more deeply where change can improve customer experience, operational agility, and future growth.
Modernization does not depend on a single, high-risk cutover.
The “Cloud by Day, Frame by Night” model allows cloud-based services, analytics, and AI workloads to operate alongside critical mainframe transaction and batch processing. At the same time, Oracle GoldenGate synchronizes data between environments in real-time, supporting phased migration, parallel validation, and incremental cutovers.
This coexistence model allows organizations to realize cloud and data benefits as modernization progresses, rather than waiting for the entire transformation to be complete. Deployment options across Oracle Cloud Infrastructure public cloud, hybrid cloud, Cloud@Customer, and on-premises environments can also accommodate different security, regulatory, operational, and data-residency requirements.
Moving an application or workload is only part of modernization. Organizations also need confidence that the new environment delivers the expected business outcomes.
Capgemini combines Oracle ART Test Manager with its ZQBRIDGE and SMARTSDLC solutions to automate transaction replay, batch validation, data reconciliation, regression testing, performance testing, and functional-equivalence analysis.
This reduces reliance on manual testing and provides stronger evidence for migration approval, production certification, and cutover decisions.
Modernizing at portfolio scale requires more than a series of individual projects.
Capgemini’s modernization accelerators support the full journey:
Together, these capabilities provide an industrialized path from assessment and discovery through rehosting, modernization, validation, and operations.
Expected outcomes can include:
The strongest modernization strategy is rarely the one that changes everything at once. Instead, it’s the one that protects operational stability while steadily expanding what the business can achieve.
Capgemini and Oracle bring these principles together, helping organizations preserve the business logic that continues to create value, transform the capabilities that need to move faster, and establish a cloud foundation ready for data, analytics, and AI.
The post Modernize the mainframe at the pace your business can support appeared first on Capgemini .