Trigger multiple workflows simultaneously in GitHub Actions from master workflow using matrix strategy

While working on an E-commerce application consisting of ~25 NodeJS microservices, I came across a requirement to optimize and speed up the process of microservice deployments. Every time Operations team is tasked with Stage or higher environment deployments, they were spending majority of time on below 2 tasks-

1. Prepare a list of microservices along with versions marked for deployments. For this task they have to manually go to 25 GitHub repositories and…