Generally, the larger a company is, the more diverse it will be. Diversity in the workplace is beneficial from both a professional perspective, in that you’ll meet a broad range of people with hugely varied skillsets, and from a personal perspective, in that there’s a large pool of people to make friends.
A larger company means a larger pool of talent, and big companies typically attract the best of the best. This means that you’ll have the opportunity to learn from people who are experts in their field, which is great for your professional and personal development.
Formal training programs are often readily available in large companies, meaning there are more opportunities to develop and grow. Thanks to the breadth of roles available in large corporations, you’re more likely to be able to make sideways moves and try different roles