I'm especially fond of his description of boundaries and the trade-offs of different kinds of contracts between bounded contexts. There's also a lot of good insight into how we abuse the database and couple ourselves to it for the convenience of CRUD. Really feel like I should've picked up this book months ago.
It's always refreshing to see a writer that's honest about trade-offs, instead of spouting their preferred method as the one-true-way which will solve all your problems.