VERTEX - means at the top or apex, which could denote your companies position as a consultancy.
In addition each of the letters could denote to your company’s core values or brand personality traits,
V- VISIONARY,
E- ENTHUSIASTIC,
R -RELIABLE/RESILIENT,
T -TRUSTWORTHY,
Ex -EXPERTS/EXPERIENCED.
As a whole it can be read as ‘VISIONARY, ENTHUSIASTIC, RELIABLE & TRUSTWORTHY EXPERTS.’