This thesis presents the development and implementation of an APIOps and DevSecOps platform for automated API release and security analysis in cloud environments. The research was conducted at Cloud9 Reply to address a key enterprise challenge: securing and managing APIs effectively. The first part reviews different API types and styles, the maturity of current API platforms, and key concepts such as DevOps principles, enterprise workflows, and API management. It also compares solutions such as Kong API Gateway, Azure API Management, Tyk API Gateway, and Layer7 API Management Platform. The main contribution of this work is the design and implementation of an integrated APIOps platform built on Azure cloud infrastructure.