The success of a venture-backed company usually depends on two main factors: its technical innovation and the velocity with which it introduces new products. In order to sustain these competitive advantages throughout their growth, companies must ensure that the delicate relationship between the CEO and the CTO is effective.

The CEO and CTO have a fluid relationship that changes over time. As the company grows, the relationship evolves because of the expansion of the executive team beyond the original founders. As the company grows, investors may also replace the CEO with “a real business person.” Sometimes, the CTO decides to leave the company and its politics to found yet another company.

I’ve experienced this rapidly shifting dynamic from both sides — as an outside CTO coming in to replace, or supplement, the founding CTO and welcoming a new CEO after the VCs replaced the founder CEO. In both scenarios, I have observed (and suffered from) misaligned expectations between the CTO/VP of engineering and CEO that lead to frustration and a lack of effectiveness on both sides.

To read more, please see Bernard’s piece on Forbes.com