Green IT: How Migros Online optimized IT for performance, cost and carbon

reading time: 3 minutes

Migros Online is the online supermarket of the Migros Group, originally founded as LeShop. Migros Online delivers groceries and essential goods directly to customers’ doors, offering over 12,500 products, with 1000 employees across 5 sites in Switzerland. In 2024, the company reached CHF 365 million in revenue, continuing its growth trajectory in the online retail sector. The platform serves a large customer base with partnerships such as Swiss Post for nationwide delivery, and it has integrated digital services, including the Migros app and website for a seamless shopping experience.

Challenge

Migros Online operates a high-traffic digital ecosystem with over 1 million web sessions and 10 million app sessions per month. Its IT infrastructure is at the core of the e-commerce platform’s success. It spans cloud environments, end-user devices, and third-party platforms, all of which are critical to business performance.

While availability, security, and scalability are top priorities for IT, the environmental impact and related costs of IT infrastructure were not visible. Data provided by cloud vendors was fragmented and difficult to translate into actionable insights. Sustainability criteria were not yet integrated into IT governance or infrastructure decisions.

At the same time, Migros Online wanted to contribute to its group’s 2030 and 2050 climate objectives, and control IT costs—without slowing innovation or compromising performance.

The key challenge was to establish a reliable environmental baseline and identify high-impact, quickly actionable improvements aligned with operational and business priorities.

Solution

Migros Online partnered with MIKUJY, Switzerland’s leading IT and sustainability company, to conduct a structured Green IT audit.

Using a data-driven methodology and MIKUJY’s integrated SaaS platform, the audit assessed:

IT equipment used by 97 IT professionals and 1,000 employees,
Cloud workloads and data storage,
Third-party platforms and digital services.

MIKUJY delivered a clear baseline of IT-related environmental emissions and identified priority levers with the highest environmental and financial impact. This included cloud resource optimization, removal of unused projects, extending hardware lifecycles, and increasing employee awareness.

Recommendations were pragmatic, measurable, and immediately actionable, ensuring no negative impact on performance or security while embedding sustainability into IT decision-making.

Benefits

The results were both rapid and measurable with:

–22% IT carbon emissions, reduced from 181 to 140 tCO₂eq, primarily through cloud optimization in 2025.
High ROI with limited investment.
Improved cost visibility.
No impact on performance, availability, or security.
Environmental criteria will be integrated into IT governance and project design.

Beyond the numbers, Migros Online established a foundation for long-term sustainable digital infrastructure—aligning cost, carbon, and resilience.

With MIKUJY’s expertise, Green IT has become a strategic lever, supporting the organization’s twin transition and turning every digital decision into long-term value.

“The investment in a Green IT audit is a success for Migros Online to identify the highest-impact levers and legitimize our actions internally. We have a strong partner in MIKUJY to support us on this sustainable IT journey.”

Aurelia Rochat, Staff Software Engineer at Migros Online.

As a leading Swiss specialist in IT & sustainability, MIKUJY helps organizations optimize IT infrastructure for cost, emissions, and resilience, turning every digital decision into long-term value. 📩 Let’s talk. info@mikujy.com

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