Really happy for GitLab and wish you guys all the best (and luck).
We've been using Gitlab for all our company's development, however, one major issue that is pushing us to switch over to GitHub is the fact that GitLab goes down almost every other day (or sometimes every day) due to deployments. Although during this often the site remains available, when CI is not executed or triggers are not performed, it is still extremely disruptive. I really hope that you prioritise having disruption-free deployments.
We've been using Gitlab for all our company's development, however, one major issue that is pushing us to switch over to GitHub is the fact that GitLab goes down almost every other day (or sometimes every day) due to deployments. Although during this often the site remains available, when CI is not executed or triggers are not performed, it is still extremely disruptive. I really hope that you prioritise having disruption-free deployments.