Ethan J. Jackson's blog post explores how microservices and continuous integration and delivery (CI/CD) have enabled the development of Kubernetes, which facilitates multi-cloud environments by offering a standardized, portable interface, thus overcoming traditional vendor lock-in imposed by cloud providers. While this standardization allows for easier application migration across different cloud providers, it introduces significant challenges for developers due to increased complexity, as they must navigate numerous dependencies and varied tools for local testing versus production. Despite these difficulties, Jackson argues that these challenges can be mitigated by creating custom development environments that are fast, efficient, approachable, and closely resemble production settings, thereby enhancing developer productivity while retaining the benefits of microservices. Kelda, a development environment being built by Jackson's company, aims to address these issues by providing a platform that aligns closely with production environments, making it easier for developers to test and deploy their code efficiently.