All sectors are facing an increasing competitive situation, therefore economic analyzes are increasing in importance in asset management. The market dynamics tends to a continuous improvement. The objectives of profitability and life cycle costs have a significant influence on the strategy of assets and strategic decisions in the organization, so it is important to analyze capex and opex to be able to define the strategies to take. What happens when we are in a medium or small company? Generally, the answer to this is that asset management only takes place on large companies. In this research, the application of an international standard model, such as ISO 55000 in asset management, for medium and small companies, becomes relevant. This standard covers a whole concept of control, monitoring and improvement, which explains what should be done. The application of a management model based on the standard allows meeting specific requirements and characteristics. Our conclusion is that any entity, regardless of its size should establish a strategy in its asset management and ISO 55000 could help them in developing that strategy.