Comment by swader999

Ok this is helpful. If people are doing their own thing and not following the established, agreed on (or even dictated) way or vision, then you need to figure out why if you are the lead.

Maybe it is communication related. Does everyone know that this is the way they should do something? But they still don't? Have you created docs and edicts around these areas? Have you been assertive in code reviews? Have you been proactive and requested design sessions before a lot of work was done?

Has a decision been formally communicated? I see this step not happening enough, people are hesitant to be authoritative after a discussion on architectural concerns. If you are the lead, that needs to happen.

Most of the time it's simply a case of them not knowing how to do it. People are afraid to show their lack of skill and knowledge and ask for help. They get deadline pressure and deliver their default way.

Have you provided a feature or cut through the system that shows this vision for people to follow? Maybe example code, resources on the web that go very deep into the ideas and tactics? Have you paired with them to help them get started or get over obstacles. Perhaps pair your most senior person with juniors for a while to get them on the same page and capable with this vision.