How do you use data designer to link the web analytics data to your subscriber data?

A customer wants to send an email confirming opt-in when someone signs up for their emails via a form on their website. The email should arrive within a few minutes of completing the form, and all of the form data needs to be stored in Marketing Cloud to personalize the outgoing email. The customer has access to a developer for working with APIs, but they want to be able to change the email creative without involving the developer.
What should a consultant recommend?

Northern Trail Outfitters wants to provide near real-time data in a 30-day welcome journey.
Which data setup should they use for decision splits?

What is the skill set you need to build emails with dynamic content?

Northern Trail Outfitters wants to target all customers who have registered to receive Push Notifications. Their app uses the Mobile Push SDK.
In which two ways should this segment be created?