About S3
The largest provider of managed IT services in Greater Montreal.
At S3, Our Mission is Clear: Helping Montreal SMBs succeed by making them more productive and secure.
We’re proud to be the recognized leader in managed IT services in Montreal and one of the largest independent MSPs in Canada.
Since 2003
S3 was founded in 2003 by three computer engineering graduates: Marc, Vince, and Simon.
Our steady growth over the years has come primarily through referrals from satisfied clients.
What sets us apart is our focus on business outcomes before technology.
We love tech — but what we love even more is seeing the real, positive impact it has on our clients.
What motivates us most is when a client tells us we truly made a difference for their business.
A Stable Team, Long-Standing Clients
Today, over 110 people work at S3, including a dedicated in-house cybersecurity team.
Many of our team members and leaders have been with us for 10, 15, even 20 years.
And it’s the same on the client side, we’re still proudly supporting our very first clients.
We build long-term relationships, and we’re always there when our clients need us.
Services That Grow With You
Our services evolve as your business grows. Many clients start with fully managed IT services when they don’t have an internal team.
As they grow, they naturally transition to our co-managed model, where we work directly with their in-house IT team.
We tailor our services to each client’s reality:
- Managed IT Services – For companies without an internal IT team
- Co-Managed IT Services – For those with an internal team who want a strong partner
More Than Just IT Support
We don’t just fix issues — we help our clients:
- Strengthen cybersecurity with comprehensive, proactive services
- Get lightning-fast support by phone or chat
- Boost productivity by getting the most out of Microsoft 365 and AI
- Automate repetitive tasks to save time and work more efficiently
Rooted in Montreal's Business Community
We’re proud to be from here — and to serve businesses here.
Our priority is helping Quebec SMBs succeed, one business at a time.
The Founders
My role consists in defining our offerings, foreseeing the future of IT and cybersecurity, and ensuring our team and clients are well-prepared for what's ahead.
Read moreAs VP Operations, Vincent manages the company’s Finance and HR departments. He is extremely motivated and possesses great management and organizational skills.
Read moreAs a co-founder of the company, he focuses on building strong, lasting relationships with clients and ensuring they get the most value from their partnership with S3.
Read moreMy journey began with a degree in Computer Engineering from École Polytechnique de Montréal. With a deep-seated passion for the IT, cybersecurity, and business, I’ve dedicated my career to steering S3 towards innovation and excellence. Our mission is to consistently elevate the standard of service we provide, ensuring our position as the leading MSP in Quebec and focusing on the success of our clients. This vision is what drives me every day.
My role consists in defining our offerings, foreseeing the future of IT and cybersecurity, and ensuring our team and clients are well-prepared for what’s ahead. My technical background enriches my approach, allowing me to lead with knowledge and a forward-thinking mindset.
Since 2006, I’ve been a member of the Entrepreneurship Organization (EO), contributing as a board member before taking on the mandate of President for the EO Montreal Chapter. This experience has been invaluable in shaping my leadership and vision for S3.
Outside the office, my passion for adventure takes me to the mountains, where I challenge myself with backcountry skiing and trail running. Having backcountry skied across all seven continents and completed several ultramarathons worldwide, I find solace and inspiration in the remoteness of nature. And yes, I’m that guy running over Mount Royal to work every day, rain, shine, or snow.
As VP Operations, Vincent manages the company’s Finance and HR departments. He is extremely motivated and possesses great management and organizational skills. He is driven by a desire to build an outstanding work environment and therefore makes employees a priority.
Born and raised in Montreal, Vincent comes from a multicultural family with an entrepreneurial background, so he was no stranger to becoming his own boss at an early age. Today, Vincent is also a member of EO Montreal and he offers his support to the Montreal organization Santropol Roulant dedicated to environmental and social causes.
In his time off, Vincent enjoys traveling, adventure and the great outdoors, and he is also a seasoned hockey player and jogger.
Marc is Vice President of Client Success at S3. As a co-founder of the company, he focuses on building strong, lasting relationships with clients and ensuring they get the most value from their partnership with S3. While he still meets with potential clients who reach out to us, his main responsibility is making sure our existing clients achieve their goals and enjoy a seamless IT experience.
Marc holds a degree in Computer Engineering. Over the years, he has helped organize many different charity events including some for the Montreal Children’s Hospital. He has also served on the board of the entrepreneurship organization EO in Montreal for 4 years.
When calling Marc and getting his voicemail, chances are he’s either on a ski slope, on an ice rink playing hockey, on a tennis court, on a golf course, on a lake waterskiing, or on a road bike. Or he might be enjoying a great glass of wine.
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Key Benefits
Offered to Clients
Lightning-fast support
Cutting-edge cybersecurity
More productive users
Confidence that your IT fully supports your business
Looking for a new IT Partner?
Book a 30-minute call with Marc, co-founder of S3 and VP of client success.
- Talk through your IT setup and challenges
- Share what you’re looking for in a partner
- See if there’s a good fit between your needs and what we offer
- If it feels like a fit, the next step is a more detailed assessment of your needs and IT environment
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