As can be seen, only three of the nine topics for which there was statistical difference between manufacturing and service companies (highlighted cells) are among the top 12 most relevant topics for both manufacturing and service enterprises (2.1 production and process management, 4.1 quality management and 2.2 planning, scheduling and operations control). Three of them (6.1 design, measurement, and improvement of work; 3.1 lean production systems; and 4.3 standardization and quality certification) are among the most important for manufacturing, but not for service companies. Three others (5.1 logistics, transport and distribution; 5.7 logistics strategies and practices; and 81 project management) appear in the list of most frequent topics in service company advertisements, being less frequent among manufacturing companies