The mainframe remains the epicenter of the global economy, supporting the core operations of approximately 75% of Fortune 500 companies. Today, mainframe modernization has transcended the technical sphere to become a strategic business urgency.

The challenge for IT architects is to maintain the unshakable resilience of the Z platform while incorporating the agility required by the digital economy and hybrid cloud.

This scenario is marked by a structural operational asymmetry, where transactional intensity grows at a significantly higher pace than monetization.

The Pix phenomenon in Brazil is the most acute example of this reality, but it is not the only one: the growth of low-monetization digital interactions is now a constant across the entire financial sector. The pressure on the core comes from the continuous growth of non-monetized digital workloads, such as queries, synchronizations, and API calls.

This massive volume, driven by digital interactions and “chatty” APIs (such as constant balance checks and mobile status polling), generates aggressive MIPS (Millions of Instructions Per Second) and MSU (Millions of Service Units) consumption. The result is Batch Window compression and an increase in infrastructure costs that is not always matched by new direct revenue.

Evolution does not lie in abandoning the platform, but in refining its governance and the efficiency of transactional execution. It is necessary to transform the mainframe into a transparent and agile asset, strategically connecting it to modern ecosystems.

Eccox and 21CS: governance with TRANSVERSE? software

To mitigate the complexity ofz/OS environments, the partnership between Eccox and 21CS offers a response based on visibility and granular control. In an ecosystem where uncontrolled data growth can compromise institutional revenue, centralized governance becomes the only path to financial predictability.

The strategic value of TRANSVERSE? lies in its ability to provide detailed visibility into MIPS/MSU consumption at the code level. This allows IT managers to precisely identify which APIs or inefficient routines are inflating the IBM bill, transforming the mainframe into a manageable asset.

• Data-driven decisions: identification of performance and compliance bottlenecks before they impact operations.
• Cost optimization: full transparency on the impact of digital interactions on the banking core, enabling more effective zIIP offloading strategies.
• Bridge to modernization: Eccox acts as the technical authority ensuring governance is not a bureaucratic bottleneck, but a modernization accelerator.

High-level governance requires execution tools that keep pace with this speed, introducing real agility into the application lifecycle.

Eccox APT: agility and DevSecOps on z/OS

The traditional mainframe testing cycle is historically slow and dependent on shared environments, leading to data conflicts and delays in Time-to-Market. Eccox APT (Application for Parallel Testing) breaks this paradigm by introducing “virtual test tracks.”

By using isolated test tracks on z/OS, Eccox APT ensures complete data and transaction isolation. This enables multiple developers to execute tests simultaneously without the need to provision additional physical LPARs, representing massive infrastructure savings and directly addressing Batch Window Compression.

Key technical and financial gains:

• Time reduction: 70% to 80% decrease in total testing cycle
• Decentralized productivity: enables open-platform developers to interact with the mainframe via modern interfaces
• Unlimited scalability: ability to scale continuous testing without increasing infrastructure complexity
• Infrastructure reuse: optimization of existing hardware, focusing processing on value-generating activities

This agility translates into quantifiable results for the largest financial institutions in the country. The modernization advocated by Eccox is validated through large-scale implementations in highly demanding environments within the Brazilian market.

These results are not just about “speed.” They represent millions in operational cost savings and the ability to respond to Open Finance and instant payments weeks ahead of competitors.

In today’s landscape, testing efficiency is what separates market leadership from operational obsolescence.

Mainframe as a long-term strategic asset

The mainframe is now in its “fifth wave” of evolution. With the launch of the IBM z17, equipped with the Telum II processor and integrated AI accelerators, the platform reinforces its position as the most secure and high-performance environment for the digital economy.

Additionally, the technology now offers advanced quantum-safe encryption, essential for future compliance.

Classifying the mainframe as a “legacy cost” is a misinterpretation. When combined with Eccox automation solutions and 21CS visibility, it becomes a superior platform for economic sustainability.

Furthermore, visual modernization and integration with DevSecOps pipelines are essential to attract new talent, ensuring that the next generation of engineers operates the mainframe with the same tools as the cloud.

The transformation of mission-critical environments is no longer optional. Inertia in the face of transactional explosion and MIPS cost asymmetry puts institutional profitability at risk. Mainframe modernization must be treated as a continuous journey of software and process optimization.

Eccox does not provide only tools, but the intelligence required to navigate complexity. By implementing solutions that enable parallel testing, data isolation, and full infrastructure visibility, organizations ensure that the mainframe remains the pillar of innovation supporting business growth for decades to come.

The discussions shaping mainframe modernization and governance in critical environments continue at Eccox Z Day, taking place on June 10.

If this topic is already part of your strategic agenda,contact our team to check participation availability.