The Cigref, a French organization focused on digital responsibility, has created two reference frameworks to guide companies in adopting more sustainable digital practices. One framework includes 30 key actions that are described as "indispensable and quickly actionable." The other provides a common basis of about sixty indicators designed to measure progress. These indicators mostly focus on environmental aspects, divided into five areas: terminals (such as computers and smartphones), data centers, networks, internal digital services, and cloud services. For each category, the Cigref also provides an estimate of how difficult it is to collect and monitor the data. Many of the "easy" key performance indicators (KPIs) are related to terminals. These include the average lifespan of devices, the number of devices per user, the rate of devices that are shared or exceed their useful life, the number of new devices purchased annually, the percentage of refurbished devices bought, the average rating of a device's reparability, the recycling rate, and the average energy efficiency rating of smartphones and tablets. In data centers, the Cigref identifies three easy KPIs: the PUE (Power Usage Effectiveness) and WUE (Water Usage Effectiveness) indices, and the percentage of equipment that is reused. For networks, it lists the average age of equipment that is disposed of. Some KPIs are classified as "intermediate" in difficulty. In the terminal category, these include the repair rate of devices, the reuse rate of internal equipment, the average lifespan of reused equipment, and the rate of Bring Your Own Device (BYOD) or Corporate Owned, Personally Enabled (CODE) usage for internal users, and Bring Your Enterprise Device (BYED) for service providers. In data centers, the Cigref lists intermediate KPIs such as the effective server utilization rate, the age of server disposal, and the CUE (Carbon Usage Effectiveness) index. It also includes metrics related to maintaining temperatures within ASHRAE standards (18 to 32 °C), the percentage of servers meeting those standards, the percentage of data stored in countries with a weakly carbon-intensive energy mix, the ratio of energy used to total energy consumed, and the rate of renewable energy usage. The Cigref refers to the ISO/IEC 30134:3-2016 standard for the last indicator but does not define what "weakly carbon-intensive" means. At the infrastructure level, some KPIs that are "easy" to implement become "difficult" at the cloud service level. For example, the PUE and WUE indices are easy at the infrastructure level but more complex when applied to cloud services. The Cigref also includes two elements related to Software as a Service (SaaS): the rate of integrating responsible digital criteria into contracts and the share of solutions that include impact indicators. Several intermediate KPIs on the infrastructure layer become difficult at the cloud service level, such as the CUE index and the ratio of energy used to energy consumed. The Cigref lists three other difficult indicators in cloud services: the ratio of actual resources consumed to resources paid and reserved by the provider, the overall carbon footprint of the infrastructure, and the carbon intensity of SaaS per economic unit. At the level of internal digital services, the Cigref identifies three difficult KPIs, including the percentage of software that meets eco-design principles, the compliance rate of AI-based developments with frugal AI standards, and the percentage of services audited for eco-design. Two of the difficult KPIs relate to data centers: the rate of archiving or deleting obsolete data and the percentage of data centers with a weakly carbon-intensive energy mix. The Cigref also mentions the repairability rate of network equipment.