Exa Corporation emerges as a multifaceted player in the bustling domain of Computational Fluid Dynamics (CFD) software, an industry that commands innovation and precision to solve intricate fluid flow challenges across diverse sectors. With a business model that pivots on the trinity of connection, management, and security, Exa Corporation positions itself as not just a software provider but as a comprehensive solutions architect for integrated building systems, life safety systems, security systems, and IT networks.

Diving into their services, Exa Corporation's portfolio is rich with offerings that cater to commercial and healthcare facilities. Their expertise spans over four decades, reflecting a seasoned understanding of the niche they operate in. The company prides itself on its construction management capabilities, where it promises meticulous project delivery that aligns with the client's vested interests. This aspect is particularly valuable for customers looking for a reliable partner to shepherd their projects from conception to fruition without the usual runaround.

The technology solutions by Exa are not just about keeping up with the trends but selecting what truly works. This practical approach resonates with businesses that have been at the receiving end of flashy tech that fails to deliver. Furthermore, their emphasis on building long-term relationships is a nod to their commitment to guiding clients through unfamiliar territories, allowing them to concentrate on business expansion rather than operational intricacies.

While Exa's refinement in building systems is commendable, it's their integration of these systems with advanced IT support that sets them apart. They offer state-of-the-art access control and alarm systems, backed by some of Canada’s leading IT professionals, indicating a forward-thinking approach to security and technology. It's a holistic approach that ensures not just the physical but also the digital fortification of the assets they are entrusted with.

However, it's essential to note that while Exa Corporation brings a lot to the table, they do not explicitly stand out in the core CFD software function when compared to specialized contemporaries like ANSYS or SimScale. The latter brings cloud-based flexibility and integration, whereas ANSYS is renowned for its advanced multiphysics capabilities, which might be more aligned with the needs of clients looking solely for cutting-edge CFD software tools.

That said, Exa’s multidisciplinary angle might be precisely what some clients need—integrated systems where CFD software is part of a larger suite of services. Their service model suggests a user-centric interface and a support system that is always on standby, which can be a game-changer for clients who value accessibility and immediate assistance.

In summary, Exa Corporation presents itself as a resilient and adaptable contender in the CFD space, albeit with a broader focus on integrated systems. For businesses seeking a partner to navigate the complex landscape of building systems, security, and IT networks, with a touch of CFD capabilities, Exa might just be the comprehensive solution provider they are looking for. Their commitment to effective solutions, veteran experience, and client-focused services are the pillars that could make them a worthy choice, especially for those venturing into unfamiliar technological territories.