Gartner references comerzzia again as one of the top global SIM vendors 2026

Solutions Success stories Food
Unified commerce and digital transformation
La Sirena
La Sirena

Client profile La Sirena

Founded in 1983, La Sirena is Catalonia’s leading frozen food retail chain, with more than 250 stores and 600 points of sale.

With over 30 years of history, La Sirena has become a key player in food retail, with a strong focus on quality, assortment, and innovation in both products and service. However, the company’s growth and the ongoing transformation of the sector called for a technology upgrade to ensure a solid, scalable sales system aligned with today’s consumer expectations.

600
points of sale
2 millones
loyalty members
78%
of sales linked to the loyalty program

Countries

Spain

Market

Frozen food

Problem

La Sirena has taken a decisive step in its digital transformation journey with the adoption of comerzzia. Through this implementation, the company has strengthened its promotions strategy, increased personalization, and introduced greater flexibility into the shopping experience, reinforcing its position as a benchmark in the sector.

Before implementing comerzzia, La Sirena was operating with an in-house developed solution that presented certain limitations in terms of scalability, stability, and promotion management – all critical factors in a business where offers and loyalty are essential growth drivers. In addition, the system did not provide the flexibility required to evolve toward unified commerce, making it harder to connect physical stores and online channels seamlessly.

Solution

By adopting comerzzia, La Sirena has implemented a robust solution that addresses its main operational and commercial needs. This rollout includes:

  • New version of comerzzia POS: A renewed look and feel with a much more agile, intuitive, and employee-friendly interface, improving in-store efficiency and streamlining sales processes.
  • The most powerful promotions engine on the market: comerzzia enables La Sirena to deploy an advanced promotions strategy, ensuring the accurate execution of highly flexible discounts and offers across all points of sale.
  • Greater flexibility in the shopping experience: comerzzia supports a frictionless customer journey through a platform designed to integrate future solutions and move toward truly unified commerce.

With more than 2 million loyalty members and 78% of sales linked to the loyalty program, customer loyalty and customer experience are central to La Sirena’s growth strategy.

Results

One of La Sirena’s strategic goals is the full integration of its digital ecosystem. Thanks to the implementation carried out by our partner Seidor, La Sirena is now able to connect comerzzia with its new online store, enabling centralized management of promotions, customers, and purchasing processes.

The project also includes integration with its SAP ERP, ensuring a strong, connected, and scalable technology ecosystem.

La Sirena’s digital transformation continues to move forward with confidence thanks to comerzzia. With a platform built for scalability, stability, and continuous improvement of the customer experience, the company is preparing for a future in which technology, loyalty, shopping flexibility, and innovation will be the key pillars of growth.

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