Native, build or buy for my SharePoint intranet

Comparison table across the five main approaches

Element Out of the box Custom Limited custom In a box product Modular product
User experience Good Strong Good / strong Strong Strong
Feature set Incomplete Complete Incomplete / complete Complete Complete
Comms & engagement Incomplete Complete Incomplete / complete Complete Complete
Branding options Limited Very flexible Flexible Flexible Flexible
Implementation cost Low High Medium High Low
Total cost of ownership High Very high High Medium Low
Implementation speed (MVP) Quick Slow Medium Quick Quick
Level of technical debt None High Medium None None
Scalability High Medium Medium High High
Maintenance effort High High Medium Low Low
Technical knowledge required High High High Low Low