Your Sourcing Process 

Promena E-Sourcing Module helps you to create RFx events and both forward & reverse e-auctions effortlesly. Experience bottom-line effect with huge savings opportunities and operational efficiency.



Promena is the software and technology brand of ZER and provides high efficient and effective control of time, labor and cost saving to its customers in their purchasing activities with top technology.

Software as a Service

  • Public cloud deployment

  • Complementary product portfolio

  • User or product based licence pricing

  • Intuitive , easy-to-use interface

Managed Services:

  • Managed E-auction events

  • Implementation & Training services

  • Integration services

  • Supplier hotline & support desk

Video Explainer


Supplier evaluation





Master data management

Supplier risk management




issues management





Platforms Modules

Professional services

  • Supplier relationship management
  • E-sourcing
  • E-procurement
  • Auction Consultancy
  • Support
  • Training
  • Supplier Onboarding
  • Implementation
  • Integration

E-Sourcing Module:

Differentiate your sourcing events and transform them into digital while leveraging Promena's modern user interface and design

  • RFX events and E-Auctions

  • Detailed Event Logs and reports 

  • Category management

  • Scalability 

  • Communication

Supplier Relationship (Base) Management (SBM) Module:

With Promena SRM, organizations gain a dynamic and 360° approach to manage their supplier base.

  • Centralized Supplier Pool

  • Supplier Self-Registration

  • Forms & Questionnaires

  • Category Based Approval & Management

Proud of meeting the needs of +150 organizations from diversified industries in their digital transformation journey

E-Procurement Module:

Empower your buying experience with Requision, Catalog and PO management

  • Decrease  Maverick spending

  • Improve Compliance & reduce errors

  • Optimize your spend

  • Gain Transparency 

  • Dynamic workflow and Approval mechanism

Platform Overview

RFI & RFQ Events
Get information, provide documentation and standardize data with advanced Q&A forms and convert them into intelligence while calibrating your quotations

Manage forward/reverse auctions with live competition options, advanced formulations and weighting factors in 5 different global formats;
English, Dutch, Japanese, Brazilian and Yankee.
Detailed Event Logs and Reports

Get transparent and ethical procurement processes with very detailed event logs and event reports.
Category Management

Manage your sourcing events, users or supplier based on your tailored and customizable categories.

Conduct limitless RFx events and e-auctions with a considerable amount of suppliers, line items, revised bids and users.

Connect your suppliers with embedded e-mail service during sourcing events to provide joint operations and gain visibility on communication logs.



Placed in the top 3 vendors for sourcing, procurement and auction categories.


Our strategic procurement solution Promena was included in Capgemini's 2020-2021 Digital Procurement Research


Listed in the 20 Most Promising Solution Providers


A recognized Customer Leader in SpendMatters SolutionMap.


The only Turkish strategic sourcing platform listed in SpendMatters Almanac listing.


One of the 50 Providers listed in 2020 SpendMatters 50 to Watch List


One of the top 3 Strategic Sourcing Platforms


The only Turkish Strategic Sourcing Platform listed.

Interface Look

Client Stories

Süleyman Serin

Procurement Manager

Thanks to Promena, we have the opportunity to finalize our purchasing projects with many participants in a transparent e-Tender environment within 1-2 hours. In general terms, these negotiation processes take weeks.

When we consider the financial benefits of an online competition, Promena offering an excellent on-demand e-Auction Service with an experienced team, has become an integral part of our purchasing process.

Natig Garakhanov

Procurement Manager

Using e-Sourcing program in sourcing activities (i.e. provision of tenders, e-auctions, RFI, etc) is very critical for any organization since it addresses three important business requirements: sustaining transparency, control in sourcing activities, expanding access to suppliers across the world and increasing the timing of sourcing events. While we were looking for a digital solution for e-Sourcing, our preference was a flexible platform with an easy and user-friendly interface. This is important both for employee and supplier access. Promena has truly covered our needs and is providing the service which we were looking for. With their user-friendly platform, anyone can access and use this program without compromising key principles of sourcing activities.

Nadir Nasuh

Procurement Manager

Allianz Turkey, thanks to Promena to ease creation of the requests and order, bid collection, E-auction .in the system Again thanks to this module, we manage our purchasing processes from a single center, create a more effective competitive environment and increase efficiency. We would like to thank Promena team for the module's transition to live and its continuous support.

About Koc

Koç Holding was founded in 1926 and has become Turkey’s largest industrial and services group in terms of revenues, exports, employees, taxes paid and market capitalization throughout its journey of 90 years.


About Zer

Zer started its activities as a Koç Group company in 2003. Our company carries out its work with a vision of ‘’being Turkey’s best, and the World’s leader in strategic procurement and efficiency.’’


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