How do bigger businesses with internal IT/Dev teams handle Microsoft Dynamics NAV development?

StanMST

How do bigger businesses with internal IT/Dev teams handle Microsoft Dynamics NAV development? Most NAV development is done through Microsoft partners, but what if the business has the capability to do it in house, how do they do it? I am primarily asking because businesses are generally limited by what they can do/edit in the system with the Starter package and even if they purchase more add-ons, they can't necessarily do C/AL code everywhere or change all objects. What are, then, the options for such businesses with in-house staff?

TallyHo

customersource/northamerica/NAV/learning/documentation/how-to-articles/ObjectDesignGranulesNAV

TallyHo

https://mbs.microsoft.com/

Developer101

They have partners who train the inhouse staff to do the development and arrange licensing for them. Atleast this is what I know

StanMST

I should have mentioned I am aware of additional granules that can be purchased. I am more looking for actual customer experiences and how businesses have handled this. Not what is possible, but how people have been approaching this. Obviously, a customer always needs to work with a partner, but curious what the involvement is.

@Developer101 - thanks for adding to this, I am thinking this is one of the options.