What is an Integrated Management System (IMS)?

If your company holds, or is thinking about pursuing, more than one ISO certification — usually ISO 9001 for quality and ISO 14001 for the environment — chances are someone has mentioned "integrating" the two systems at some point. The question is: what does that actually mean, and is it worth it?

The short definition

An Integrated Management System (IMS) is the joint management of two or more ISO management system standards — quality, environment, health and safety, information security — under a single document structure, shared supporting processes, and, almost always, a single audit. Instead of having a "quality system" on one side and an "environmental system" on the other, each with its own manuals, procedures, and reviews, you have one single system that covers both at once.

Why it's easier than it sounds

The reason integrating ISO standards is so common — and so reasonable — is that, since 2015, every ISO management system standard has shared the same high-level structure, known as Annex SL: context of the organization, leadership, planning, support, operation, performance evaluation, and improvement. That's no accident: ISO designed it that way specifically so companies could combine several standards without duplicating work.

In practice, this means elements like the system policy, interested parties, risk management, staff training, document control, or management review are handled once, and cover every standard you have active — instead of filling out the same type of document two or three times with slight variations.

What your company gains with an IMS

• Less document duplication. One manual, one policy, one process map — not one per standard.
• Combined audits. Most certification bodies audit several standards in the same visit, cutting down audit days and cost.
• A single management review. Instead of holding separate meetings for each system, everything gets reviewed together — giving a more complete picture of the business.
• Real consistency. Risks, non-conformities, and improvement actions are seen as a whole, not in separate silos that sometimes contradict each other.

Is integrating the standards mandatory?

No. You can keep ISO 9001 and ISO 14001 completely separate, with their own owners and schedules, and that's a perfectly valid option — especially for larger companies with clearly separated departments. But for most SMEs, especially those managing the system with a small team or an external consultant, integrating usually saves real time from the very first year, without taking anything away from the rigor of either standard.