In the context of establishing an Azure infrastructure for the bank, several technical achievements were made to ensure the security, availability, and compliance of resources. Firstly, architectural technical documents were created to deploy an Azure infrastructure based on the Hub & Spoke model. This model ensures centralized resource management while strengthening security. The team also implemented rigorous security practices, such as preventing data leakage, encrypting communications, and limiting unauthorized access to sensitive resources. Concurrently, alerts were configured to monitor resource usage, and remediations were put in place to manage resources non-compliant with security rules. A fully managed Hub & Spoke architecture by Terraform was deployed for automated and consistent infrastructure management. The project also encompassed the establishment of strict security rules to secure user access to Azure, utilizing RBAC (Role-Based Access Control) to authorize resource access and Azure Policies to enforce secure resource configurations. Monitoring tools like Metric Alerts and Activity Logs Alerts were integrated to detect abnormal behaviors and trigger automatic actions as needed. Resources challenging to manage via Azure Policies were parameterized using automated scripts (Runbooks and Functions). The project also focused on securing inter-application communications with peering rules, firewalls, and routing tables. Finally, secret management was centralized through KeyVault, and the automatic rotation of API certificates was implemented to enhance security. All these processes were integrated into a security release automation pipeline with Jenkins, enabling continuous and secure updates of infrastructure components. To ensure connectivity with the bank's private cloud, a secure communication setup was achieved through ExpressRoute implementation.