Calculator for app development cost estimation highlighting the role of DevOps Engineers in Australia, Canada, and the UK for building Scalable SaaS (Software as a Service) Platform applications. This calculator focuses on the infrastructure, deployment, and operational aspects crucial for SaaS products designed to serve a growing number of users and maintain high availability. Experienced DevOps engineers in Sydney/Melbourne (AU), Toronto/Waterloo (CA), and London (UK) are in high demand. Key cost drivers include designing and implementing CI/CD (Continuous Integration/Continuous Deployment) pipelines for automated testing and release, infrastructure as code (IaC) setup using tools like Terraform or CloudFormation, containerization with Docker and orchestration with Kubernetes, and comprehensive monitoring and logging solutions (e.g., Prometheus, Grafana, ELK stack). The calculator will consider cloud platform selection (AWS, Azure, GCP) and optimization of cloud resources for cost-efficiency and performance. Ensuring robust security throughout the development lifecycle (DevSecOps), implementing disaster recovery and business continuity plans, and managing scalable databases are also significant DevOps responsibilities that impact cost. Ongoing DevOps costs involve maintaining the CI/CD pipeline, managing cloud infrastructure, responding to incidents, performance tuning, and scaling resources as the user base grows. For SaaS platforms, reliable operations are as critical as features, making DevOps a vital investment.