Infrastructure:  Optimizing and deploying the hardware and software infrastructure can drastically reduce power consumption. Strategies like DVFS allow dynamic control of voltage and frequency to minimize data center energy usage and maximize resource use, ultimately decreasing the overall energy consumption.

Facility: Taking different measures for efficient energy usage at the data center facilities is another way to Green cloud computing. The location, air conditioning system of the data center, energy consumption optimization methods by using machine learning algorithms, and process automation are a few factors at the facility that constitute good facility strategies for green cloud computing. 

Workflow: Shifting workloads to reduce network traffic, optimizing storage, and automating mundane processes are a few ways to reduce energy usage.  Other ways to approach Green cloud computing include Product longevity, Algorithmic efficiency, Virtualization, and power management.  

Conserve energy/Reduction of power consumption: Let us start with the most obvious one. Earlier, reducing power consumption was mainly about switching off lights when not in use. It was then about 'smart' infrastructure at the offices, including smart lights and energy-efficient systems. Now, it is also about servers and storage. Running on-premise servers needs a constant power supply and proper air circulation systems, not only decreasing your power consumption but also your overall operational costs. Moving to the cloud is a hassle-free approach that tackles two birds with the same stone. Now with green computing and cloud computing, the aim is to reduce power consumption even more.

Going remote and paperless: With the green cloud, one does not have to stay on-premise, enabling the possibility of remote working. This means that employees no longer need to commute to the office, reducing fuel consumption and increasing productivity. This also helped companies to cut down real-estate and operational costs. Cloud also makes storing and accessing data from anywhere easier and more secure, allowing companies to go paperless.

Implementation cost: Initial investment for green computing might be considered high for small and medium-sized organizations. However, considering the long-term solution plays a crucial role, going cloud is undoubtedly profitable in the long game. 

Location of Data Centres: For the data centers to be completely green, renewable energy sources like solar and wind must be used. This means that the location of the data centers is critical and might not always be a convenient option.