The document summarizes a presentation by ThousandEyes on analyzing internet, cloud, and software-as-a-service outages and performance issues. It discusses a recent outage at Microsoft, how ThousandEyes monitors the digital infrastructure, and lessons learned about the importance of change management and visibility across technology domains for reducing service disruptions. The presentation provides an overview of ThousandEyes' capabilities and next steps for learning more about internet insights or signing up for a free trial.

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© 1992–2023 Cisco Systems, Inc. All rights reserved.

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© 1992–2023 Cisco Systems, Inc. All rights reserved.
Featured Speakers
Chris Villemez
Technical Marketing Engineer
Kemal Sanjta
Principal Internet Analyst

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© 1992–2023 Cisco Systems, Inc. All rights reserved.
Before We Begin...
• If you have any questions, please type them in the Questions window.
• If you have any audio problems, please chat us for help.
• A recording of this presentation will be sent to you in a few days.
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@ThousandEyes
© 1992–2023 Cisco Systems, Inc. All rights reserved.

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© 1992–2023 Cisco Systems, Inc. All rights reserved.
Agenda
• About ThousandEyes
• Digital Service Building Blocks
• Microsoft Outage Summary
• Live Data/Sharelink Review
• Lessons & Takeaways
• Q&A
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@ThousandEyes

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© 1992–2023 Cisco Systems, Inc. All rights reserved.
Actionable Insight for Internet, Cloud, and SaaS
Correlated Insights
Quickly isolate issues to app, network,
or service
Network Visibility
Overlay, hop-by-hop underlay, ISP
performance, and BGP routing
App Experience
SaaS, API, and internal app
performance and user experience

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© 1992–2023 Cisco Systems, Inc. All rights reserved.
CDN
Cloud
BGP
DNS
The Building Blocks of Today’s Digital Services
SaaS

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Microsoft Outage Summary
• Significant disruption that impacted connectivity to many
services, including Azure, Teams, Outlook and Sharepoint
– High levels of packet loss
– Both Microsoft and other services became unavailable due to
connectivity disruptions
• Outage started around 7:05 AM UTC and lasted until 8:50
AM UTC, at which time packet loss returned to 0%
• Triggered by an external BGP change by Microsoft that
impacted connected service providers
– Led to destabilization of global routes to its prefixes
– Significant packet loss and diminished reachability of its services
– During the incident, DNS changes were observed that may have
indicated steps to steer traffic away from impacted areas within
Microsoft’s network.

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© 1992–2023 Cisco Systems, Inc. All rights reserved.
ThousandEyes Global View During The Outage

9. Live Data/Sharelink
Review

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© 1992–2023 Cisco Systems, Inc. All rights reserved.
Gain Network and Application Outage Visibility Using Internet Insights
• Internet Insights provides a macro-
level view of ongoing network and app
outages
• Global data collected from different
networks, ISP’s, and transit providers
• Data is fed into the platform to help
enterprise users correlate performance
issues with broader outages and
quickly pinpoint where an issue is
occuring
Learn More About Internet Insights

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© 1992–2023 Cisco Systems, Inc. All rights reserved.
Key Lessons and Takeaways
• Don’t underestimate the importance of change management
– With diligent process, change reviews, prepared rollback plans, and quality
assurance testing prior and after any change, the risks of disruption can be
greatly reduced.
• Robust visibility is essential
– This includes end-to-end visibility across all technology domains involved
in delivering the service to users.
– Knowing as quickly as possible that performance has drifted from desired
levels is critical to reducing the pain to your customers, users, and
partners.
– IT teams must also be able to quickly pinpoint where the fault is and who
owns and can fix it.

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@ThousandEyes
Learn
more
Free
Trial /
Demo
Next Steps
© 1992–2023 Cisco Systems, Inc. All rights reserved.
• Subscribe! https://blog.thousandeyes.com
• Get a real-time view of the health of the Internet
https://thousandeyes.com/outages
• Sign up for a Free Trial:
https://www.thousandeyes.com/signup
• Request a demo:
https://www.thousandeyes.com/request-demo

13. Q&A