[yamoriyamori]

Really good points above. Having worked in SW Consulting for >9 years, the communications part is essential: you will need to 'translate' (see above) between two very different entities, acting as a conduit, and be able to switch context quickly.

Re: technical background, it will certainly give you authority, but a soft skill I lean on every day is you'll need to learn how to educate/explain in brief sentences, while still sounding enthusiastic and without any hint of eye-rolling or annoyance, even if it's a basic concept to the project or something you have a deep knowledge of.