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title: Cisco Application Centric Infrastructure (ACI)
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- title: Networking
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*I keep most of my Cisco notes elsewhere, sorry.*

## General

- A zero-trust platform and network fabric for data centers.
- Not part of Cisco DNA, but shares certain applications.
- Uses mainly Nexus switches in a spine-leaf topology.
- Managed by Application Policy Infrastructure Controller (APIC) (not to be confused with APIC-EM).

### Relation to SDA

- ACI is for DC while SDA is for campus/enterprise.
- Both are zero-trust platforms/fabrics with VXLAN-based overlays.
- SDA is part of Cisco DNA, ACI is its own thing.
- SDA is managed by DNA Center, ACI is managed by APIC.
- They're compatible for traffic going to/from datacenters (i.e. they share/translate zero trust info).
- ACI uses mainly Nexus switches while SDA used mainly Catalyst switches.

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