If you’re a network engineer you should consider Cisco qualifications such as CCNA, CCNP and CCIE. Infrastructure engineers working on remote servers would find VMware certifications useful.
If you’re looking to better understand how business objectives and digital and IT capabilities inform each other, you could consider a move into service management. Both IT and infrastructure aligned, industry-standard service management qualification ITIL uses a systematic approach. It covers both continuous improvement and service strategies and will help you to adapt infrastructures at your own organization and give you the agility to react quickly to change.
And of course, with the acceleration of cloud strategies, Azure and AWS certifications are highly regarded.