Sustainable event planning means ISO 20121. Certify it.

Sponsors, public bodies, and major clients are increasingly requesting the ISO 20121 standard for their events. With Complaion, the time to achieve this is significantly reduced: a Lead Auditor manages every critical phase, and the platform automates the rest.

Public tenders, contracts and large clients almost always require this standard. With Complaion, the time to achieve it is significantly reduced: a Lead Auditor manages each critical phase, and the platform automates the rest.

ISO 9001

Renewal included

Valid 3 years

Upcoming audits

ISO 20121

ISO 20121

Audit esterno

Da pianificare

ISO 20121

ISO 20121

31/07/26

Audit interno

All audits

“Audit completato. Report caricato, solo 2 Osservazioni!”

Alessandro, Lead Auditor

Alessandro, Lead Auditor
Portrait photo of a Complaion team member

Marco, Lead Auditor | Replies within 24 hours

Portrait photo of a Complaion team member

Marco, Lead Auditor | Replies within 24 hours

Portrait photo of a Complaion team member

Marco, Lead Auditor | Replies within 24 hours

OUR METHOD

This is how we get you ISO Certified.

80%

automated

Documentation of the Event Sustainability Management System generated by the platform.

faster

Less waiting, less bureaucracy: from gap analysis to audit, with the same rigor required by ISO 20121.

100%

success

We prepare the ISO 20121 Audit with accredited bodies: no surprises on the day of the Audit.

event sustainability management system

Certify the sustainability you already apply to your events.

Complaion Procedure Trasp logo

WE FORMALIZE WHAT YOU ALREADY DO

We'll write the procedures to make your events sustainable. We'll take care of the rest.

Choosing local suppliers, on-site waste management, and venue energy consumption: your company already manages these aspects every time you organize an event. We map them, identify the requirements of the ISO 20121 standard, and build the event sustainability management system.

Work without surprises

Your Sustainability Management System monitored every day, not just in audits.

The ISO 20121 certification journey doesn't end on the day of the audit: it requires demonstrating sustainability at every new event you organize, with periodic surveillance audits. The platform monitors suppliers, consumption, and sustainability objectives event by event, and flags any non-conformities before they become a problem upon renewal.

Complaion Mon 03 Trasp logo
Complaion Hls Trasp logo

Prepare to grow

Maintain access to sponsors and grants, event after event.

Sponsors, public bodies, and major clients verify certification with each new edition, not just the first time. The platform keeps your ISO 20121 compliance up to date, and if you also manage quality, environment, or safety with ISO 9001, 14001, or 45001, your Lead Auditor keeps everything aligned on the same system, so access to sponsors and tenders remains open over time, without having to manage parallel systems.

complaion's process

We'll be with you every step of the way from 0 to 20121.

Documents

Documents

3 gaps

Upload documents

Let's analyze what you already have, what's missing, and what you need to be ready.

Procedura n.123

3 ready

We write procedures

We build procedures, policies, and records based on the way you actually work.

Conforme

Let's do the Audit

We carry out the Internal Audit, produce the reports and check that everything is ready.

Stamp 1 logo

Valid 3 years

Get the certificate

A Certification Body carries out the External Audit and issues the Certificate.

Management System Certificate

Management System Certificate

ISO 20121

ISO 20121:2024

ISO 20121:2013

Environmental Sustainability of Events

Environmental Sustainability of Events

issued by

issued by

Accredited body

Accredited body

Valid for 3 years

Valid for 3 years

Renewal included

Renewal included

ISO 20121 CERTIFIED COMPANY

Certification issued by an Accredited Body.

Valid for 3 years

Recognized in over 170 countries

Request in public tenders

Renewal managed by us

VERIFIED REVIEWS

Who has achieved ISO 20121
along with Complaion.

A pleasant discovery

We were struggling with the "usual" extremely long waiting times for ISO 9001 and 27001 certifications with the 27017 extension, and when we discovered Complaion, everything changed. Clear, precise communication, and above all, super fast and responsive!

AC

CastInformatica

June 5, 2026

A pleasant discovery

We were struggling with the "usual" extremely long waiting times for ISO 9001 and 27001 certifications with the 27017 extension, and when we discovered Complaion, everything changed. Clear, precise communication, and above all, super fast and responsive!

AC

CastInformatica

June 5, 2026

Very serious company

Along with consulting, it offers an online platform that greatly simplifies quality system management. The consultant Alessia, who guided us through the certification process, is knowledgeable and extremely helpful.

TB

Croce Blu

May 6, 2026

Very serious company

Along with consulting, it offers an online platform that greatly simplifies quality system management. The consultant Alessia, who guided us through the certification process, is knowledgeable and extremely helpful.

TB

Croce Blu

May 6, 2026

Winning model

I received excellent support throughout the certification process, even during the most challenging times of the year. The combination of the platform and easily accessible consultants is ideal.

AF

Logistic Solution

February 16, 2026

Winning model

I received excellent support throughout the certification process, even during the most challenging times of the year. The combination of the platform and easily accessible consultants is ideal.

AF

Logistic Solution

February 16, 2026

FOR GROWING COMPANIES

Not sure which ISO
ISO partire?

A 30-minute meeting with one of our consultants will be enough to show you the fastest path.

FOR GROWING COMPANIES

Not sure which ISO to start with?

A 30-minute meeting with one of our consultants will be enough to show you the fastest path.

FOR GROWING COMPANIES

Not sure which ISO

to start with?

A 30-minute meeting with one of our consultants will be enough to show you the fastest path.

FREQUENTLY ASKED QUESTIONS

Do you have any questions about ISO 20121 or how Complaion can help you?

What is ISO 20121 and why is it important for my company?

ISO 20121 is the international standard for sustainable event management: it covers the environmental, social, and economic impact of every event you organize, from supplier selection to on-site waste management. This is important because sponsors, public bodies, and large clients are increasingly selecting certified organizers, especially for events funded by public funds or linked to green tenders.

How can you help my company achieve ISO 20121 certification?

A Lead Auditor maps how you currently manage suppliers, consumption, and waste at your events, identifies regulatory requirements, and works with you to develop your event sustainability management system. The platform generates documentation and monitors objectives and deadlines event by event.

How long does it usually take to get ISO 20121 certified with Complaion?

It depends on the number and frequency of events you organize, and how well structured your sustainability practices are. Your Lead Auditor will give you a precise estimate after the initial analysis.

What kind of support does Complaion offer during the ISO 20121 certification process?

A dedicated Lead Auditor oversees every critical phase, from gap analysis to audit preparation, while the platform automates documentation and monitors suppliers, consumption, and sustainability objectives for each new edition of the event.

REQUEST INFORMATION

We help you get certified quickly.

©2026 Complaion. All Rights Reserved / Complaion S.r.l., P. IVA 12884580965, Via R. Amundsen 5, Milano
PEC: part@pec.it, Capitale Sociale: €17.017,18, REA MI-2690509

REQUEST INFORMATION

We help you get certified quickly.

©2026 Complaion. All Rights Reserved / Complaion S.r.l., P. IVA 12884580965, Via R. Amundsen 5, Milano PEC: part@pec.it, Capitale Sociale: €17.017,18, REA MI-2690509

REQUEST INFORMATION

We help you
get certified quickly.

©2026 Complaion. All Rights Reserved / Complaion S.r.l., P. IVA 12884580965, Via R. Amundsen 5, Milano PEC: part@pec.it, Capitale Sociale: €17.017,18, REA MI-2690509