Being a project manager for a while evolving along with the evolution in the IT landscape of agility, microservices and cloud computer, I see a pattern in the painful ordeal teams go through, especially when collaboration is needed more than ever to build systems. The topic is very relevant when highly individualistic opensource programmers work together. In this presentation, as the subject is vast, I layout a list of critical blind spots and pitfalls the teams can avoid while designing and developing larger applications.