Faced with increasing urbanization and uncertainties linked to climate change, the scientific community has integrated the concept of resilience into urban management practices. Once revolutionary, now a buzzword, resilience is a concept that is difficult to transform into an integrated tool that stakeholders accept and adopt. This paper offers a perspective on the different interpretations of resilience, its difficult implementation and the tools that seek to operationalize it. The underlying questions are how these tools are appropriated by urban managers and territorial decision-makers, and how the theoretical concept can be translated into resilient urban development. This research paper reviews the work on resilience and investigates its use and operationalization, comparing two different approaches - organizational (Canada) and holistic (France) - that aim to clarify and operationalize resilience. These theoretical approaches have been combined to create workshops for urban managers so they can move from theoretical results to practical applications.