It wasn't the most comfortable thing, flying to Las Vegas on Sunday for AWS's re:Invent conference, doing interviews Monday, and taking a red eye back to anchor TechCheck on CNBC Tuesday. But I was amped for Cloud Week, and was determined to fit it all in.

A few things about the week that keep replaying in my head:

• Enterprise infrastructure technology is still changing at a rapid clip, now at the level of custom chips, DevOps tools, industry-focused creative ideas, and focused partnerships.

• We're moving into yet another generation of CEO leaders, including Adam Selipsky at AWS and Bret Taylor at Salesforce, who bring new combinations of skills to the top.

• Cloud technologies are moving into spaces where skeptics thought they wouldn't. Nasdaq this week announced an aggressive move to the cloud for its matching engine, a system that needs extremely low latency.

Some exclusive interviews with some of the most impactful leaders in enterprise tech, below:

AWS CEO Adam Selipsky on Staying Focused at Scale: CNBC Working Lunch

After his first AWS re:Invent since returning to Amazon, get to know AWS CEO Adam Selipsky in a Working Lunch on CNBC's Power Lunch:

Watch my full conversation with Selipsky on the AWS announcements here:

Marvell CEO Matt Murphy on the Strategy in Cloud and 5G

I've been talking to Marvell CEO Matt Murphy a lot more lately, because the company has clearly positioned itself as an important player in the infrastructure of the cloud. This week Marvell turned in financial performance that shocked a lot of investors, who didn't anticipate how high the demand is for the company's chips as high-bandwidth connectivity grows in a cloud and 5G world:

Snowflake CEO Frank Slootman on Blowout Growth

Snowflake CEO Frank Slootman joined me on CNBC's TechCheck for Cloud Week, the day after the company turned in a quarterly report with strong sales growth and cost discipline. He also previewed his upcoming book, Amp It Up:

Bret Taylor Named Co-CEO of Salesforce; Looking Back At His First Business

This week Bret Taylor got promoted to co-CEO at Salesforce, a pioneering company in the software-as-a-service arena of the cloud. Taylor himself has an impressive backstory in Silicon Valley, making a name for himself during the emergence of Web 2.0 and social media. Here he is in a part of our Fortt Knox 1:1 this fall, talking about the first business he started:

And here's the full conversation:

Is Square or Twitter the Better Bet? On the Other Hand

Jack Dorsey’s leaving Twitter, and Square’s changing its name to Block. Which is the better bet from here? I argued both sides in the latest On the Other Hand, on CNBC's Squawk Box:

Check out The Black Experience in America: The Course, an online educational resource I researched, designed and built. A free PDF download is available to bring the material to kids, and the online interactive experience is made for adults.