Climate change and climate variability are creating negative impacts to agriculture. It affects both food security and crop and livestock production. In the process, it affects the livelihood of communities. Climate-smart agriculture is seen as an alternative to mitigate the challenges of climate change. Literature studies were obtained from journal articles on capacity development. The problem investigated is that climate-smart agriculture (CSA) is a recent concept which needs to be understood with climate change, and the extension advisors do not have requisite skills. Ethical tea partnership singles out tea farmers and advisors in the tea sector. The findings included the definition of climate-smart agriculture (CSA) and the linkage with climate change. It further identified key issues involved in CSA, adaptation and mitigation, and identified the technologies that need to be scaled up in order to mitigate against climate change. The study recommended the area of competency required to serve farmers by advisory services by showing the needed factors that will serve as strategies in order to scale up the needed technologies useful in managing climate-smart agriculture. The chapter recommends capacity development for extension advisors and concludes with a series of mitigation steps.