Teams + SharePoint--should begin with Teams for new sites or SharePoint Online sites & connect Team

Hi SusanMcClements ,

There isn't a best practice approach, both approaches are valid and what it comes down to is what is right for your business. 

Change management and adoption of SharePoint can be a big task to get right for some organisations, for example moving from Shared Drives to SharePoint. If users are used to using Shared drives for the last 25 years and there is resistance to change and adoption has to be carefully managed with a lot of time and effort then go for SharePoint Team sites and roll out Teams later.

If you are a tech savy media company where all users self learn and pick things up with minimal effort then go for Teams and SharePoint  Team sites from the off.  Your business priorities may be another factor, if you need to get rid of Skype for Business then you are going to want to start on  a Teams project sooner rather than later. You may decide that you just roll out Microsoft Teams and look to educate users on more of the collaboration and document management features later. 

Getting your information architecture correct for your organisation is important, mostly this will consist of your SharePoint Team site rollout and as you have identified global navigation and hub sites so that you can build hierarchies and roll up content which isnt as easy in Teams. 

Last 3 projects I have done have been SharePoint Team sites first and then Teams rollout planned for a future phase. Due to the change involved for users, the level of internal resource available and the risk of not being successful if to much is rolled out at once. 

Hope that helps a little and doesn't muddy the waters further.

Kind regards

Andy