On Tuesday, Slack went down and at first, we made all the usual jokes. But it got us thinking: how resilient is your company to a major service outage?

• Can you still do your work and push code if s3, Azure, Rackspace, or EngineYard goes down?
• If your DNS provider gets DDoS’d, do you have a backup DNS provider?
• Are you keeping logs of all user activity? (without leaking PII)
• Are you logging your errors? Are they easily searchable?
• Do you have database redundancy, and do you test your backups?
• For remote teams, what is your default backup communications channel?

If you’re unsure, ask your team!