Based on my experience working in IT on complex projects, it is better to work together in the same room/office, if you have a team that is not all seniors and

Based on my experience working in IT on complex projects, it is better to work together in the same room/office, if you have a team that is not all seniors and if you work on a greenfield project where you have a lot of structure to put in place. Often with people that are doing something new to them, they might have a "mental barrier" of doing something new, because there are a lot of things to take into account, and discussing with somebody experienced in person helps more that having a video call. Also making some architectural decisions might take a lot of time if there are multiple potential solutions, each with pros and cons (ex. which message broker / http client / log & metric aggregator / sql database to pick). Being in the same room, a few senior developers and possibly the infrastructure guy makes it easier. When working on already launched projects, the architecture is already in place and doing maintenance or adding new features does not need a lot of communication/synchronization between team members, so doing that remotely is not an issue. However it might be if you are not familiar with the project, or don't have experience, or you have associates in the team and you need good performance from them. I don't know if it's the same when working on simpler projects.