This research intends to identify the processes and factors of Community-Based Ecotourism (CBET) development in indigenous communities, focusing specifically on the states of Oaxaca and Puebla, Mexico. Six different CBET initiatives were investigated. Two methodologies were used for data collection. One approach involves conducting in-depth interviews with community representatives to potentially refine the hypothesis from prior studies and preliminary fieldwork. The other approach uses a questionnaire for the quantitative validation of the hypothesis. The findings revealed core factors influencing CBET success, such as deep community pride, an active community-centered approach, management skills, and the integration of ecotourism with traditional lifestyles. Surprisingly, communities demonstrated a willingness to embrace government support as a pivotal catalyst in the initial phases of CBET endeavors. This openness is influenced by specific national laws that endorse and safeguard indigenous autonomy, ensuring that accrued benefits are retained within the community. This study underscores the delicate balance between heritage preservation and a thoughtful acceptance of modern progress, offering valuable insights to CBET.