Pros
Great onboarding experience, principles of work/life balance, hybrid working, transparency, diversity & inclusion, nice colleagues. Great opportunities to learn and grow professionally in AdTech. A lot of talented people in the company. New customers and challenges to work on (for those like me who loves that). IAS is very dynamic and growing fast and it has good prospects to become future tech leader in its domain after recent acquisition of Context, Publica, etc. IAS is a solid company and it's a best time now to join IAS due to its good prospects for growth (stock prices, the size of the company, etc.) in the next couple of years. IAS expanding its business into Europe (new offices, companies acquired) thus has advantage providing work experience in the US-style company.
Cons
Just started my journey, no cons at the moment.