Who We Are

Strong’s Supreme Service Inc. (3Si) is an international management consultancy company that specializes in the effective implementation of change. Through diverse assignments entrusted to us, our comprehensive focus on mobilizing and enabling the human side of the change process using innovative but proven processes, methods and tools, have, over time become acknowledged as global best practice.

Read More >>

Our Services

3Si products and services are used by clients in more than 60 countries across a broad spectrum of sectors. Our Supreme Service™ model, the Organization Renewal™ process, the psychometric assessment tools and our results-driven training (SavilleStrong Learning) are the pillars of our approach and have been validated against the highest global standards.

If you are considering entering the field of management consultancy or are operating as a consultant, we know the many challenges that you are facing. Our Principles of Management Consultancy™ (POMC) course is built on competency mapping in a way to make competencies visible to move beyond theory into behaviours and skills necessary to practice as a successful Management Consultant. Our work with assisting Management Consultants to develop recognized competencies, prepare to achieve certification through an internationally acclaimed body and use best practice in serving their clients continues to demonstrate our own commitment to global best practice and standards.

Consultants to LeadersConsultants to Consultants

Our Latest Thinking

think1 More

Supreme Service: Beyond Good Service

Supreme Service™ is the ultimate marketing strategy. Our definition of Supreme Service, “Each encounter must be so satisfying that the customer looks forward to repea…

latest_think_img2 More

Organizational Renewal: Change that WORKS!!!

Change is often a process that drains an organisation. We offer a change process that is practical, proven, and sustainable which evokes energy and ownership. This infect…

latest_think_img1 More

SavilleStrong Learning

SavilleStrong Learning is a joint venture with Saville Consulting providing international accreditation for our training and public and in-house workshops. As part of our…

Our Testimonials

Dennis gets results! I've known Dennis since 1989. We first met at the Canadian Institute for Organization Management. I then invited Dennis to facilitate a strategic plan with Ontario Downtowns. He t…

Todd Letts Read Testimonials>>

Latest Post

ORGANIZATION Renewal: Change with a difference

Posted on: 12/8/2013

WHEN it is time to make change, most of the people who will be affected by it – know it.  While the need to change is continuous, there are cir…

View More >>

Subscribe to Our Newsletter

3Si Flow Newsletter

Sign up for our monthly newsletter and get the latest perspectives on sustaining the growth and renewal of your business or consulting practice.

3Si Flow Newsletter Signup Form

Latest News

  • Principles of Management Consultancy Barbados Workshop is Here!

    Management consulting is a major global industry and clients are now demandi…

    Read More
  • Dennis Strong, CMC, Featured Speaker at Power Breakfast in Newark, NJ

    Read More
  • Special Invitation: Strong Words Live

    Many of you have been asking about how to access our Strong Words Live articles …

    Read More