STN vs ACM Comparison

Stantec Inc is a sustainable engineering, architecture, and environmental consulting company. It offers services through the following business operating units; Environmental Services, Infrastructure, Water, Buildings, and Energy & Resources. Maximum revenue is derived from its Infrastructure business unit, which is engaged in evaluating, planning, and designing infrastructure solutions for transportation, community development, and urban spaces. The company's reportable segments are the United States, which derives maximum revenue, Canada, and Global. These segments provide consulting in engineering, architecture, interior design, landscape architecture, surveying, environmental sciences, project management, and project economics services in the area of infrastructure and facilities.

Aecom is one of the largest global providers of advisory, design, and engineering services. It serves a broad spectrum of end markets including water, transportation, and environment. Based in Dallas, Aecom employs 51,000. The company generated $16.1 billion in sales in fiscal 2025.