Different industries face different regulations. Your network must address those that apply.
Financial: PCI-DSS, SOX, GLBA
Healthcare: HIPAA, HITECH, FDA CFR Part
Government: FISMA, FedRAMP, CMMC for defense contractors
Data protection: GDPR for EU data, CCPA for California, various state privacy laws
Energy: NERC CIP for bulk electric systems
Identify your regulatory landscape early. Design your network to meet all applicable requirements from the start.