2019 Marketing Technology Landscape.
For perspective, here’s the growth of the marketplace over the past 8 years.
Excel spreadsheet of all 7,040 solutions plus a super hi-res PDF.
Best practices and compounding debt.
There are a ton of best practices, principles and processes out there. Letting others convince you of best practices is a dangerous game. Especially if the main premise is that it worked before on other projects or with other teams. What works for one team and type of dev project may not work for others so please explore but be cautious.
You may want to start by sitting down with your Designers, Developers, QA testers, and support team to determine what’s working and what’s not. Don’t be afraid to ask the hard questions because the root of the problem may not be your process or principles at all. Then discuss the trade offs and potential downside of deaveraging a single methodology across a large organization if applicable. 
EXPLORING WITH CANVAS
For times when you need a jump start, framework, mental model or are just trying to make sense of things.
You may also be interested in Tools for System Thinkers, Mental Models Explained, Mental Models I find Repeatedly Useful.