It's not about Friday; it's about flawed deployment processes.
Why this matters in practice
The common belief to avoid Friday deployments masks the underlying issue of ineffective deployment workflows. When releases wait until the last minute, it's often a sign of upstream problems in the development process. Such delays lead to rushed decisions, incomplete testing, and weekend firefighting. For instance, if a Shopify store deploys new features on Friday, the likelihood of errors increases due to the compressed timeline for testing and approval flows, often resulting in customer-facing issues. To prevent this, ensure deployments are well-planned, midweek, and involve comprehensive testing stages with assigned owners and clear SLAs to avoid last-minute scrambles.
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