diff --git a/doc/source/index.rst b/doc/source/index.rst
index c6c2e02..807d8e6 100644
--- a/doc/source/index.rst
+++ b/doc/source/index.rst
@@ -13,6 +13,11 @@ end users...), by forming a guild of people with a shared interest.
.. sigtable::
:datafile: ../../sigs.yaml
+.. toctree::
+ :hidden:
+
+ tact-sig
+
.. toctree::
:maxdepth: 4
diff --git a/doc/source/tact-sig.rst b/doc/source/tact-sig.rst
new file mode 100644
index 0000000..d637fcf
--- /dev/null
+++ b/doc/source/tact-sig.rst
@@ -0,0 +1,67 @@
+===============================================
+ OpenStack Testing and Collaboration Tools SIG
+===============================================
+
+The Testing and Collaboration Tools (TaCT) SIG maintains, in
+cooperation with the OpenDev project, the tooling and infrastructure
+needed to support the development process and testing of the
+OpenStack project.
+
+Contact
+-------
+
+* #openstack-infra channel on the Freenode IRC network
+ (`logs `_)
+* openstack-discuss@lists.openstack.org mailing list with ``[tact-sig]``
+ in the subject line
+ (`subscribe `_,
+ `archives `_)
+
+Participants
+------------
+
+The TaCT SIG consists of many former Infra team collaborators:
+people who review OpenStack job configuration changes, people who
+dig into problems with test frameworks to unblock the integrated
+gate queue, people who figure out strange Python packaging related
+issues, people who help work out lapsed control of Launchpad admin
+groups... also, the person selected by the TC to serve as
+OpenStack's representative on the OpenDev Advisory Council is
+expected to be heavily involved. Many of these activities are
+closely related to work the Quality Assurance team is doing, so
+folks who are active in QA participate in this SIG as well.
+
+History
+-------
+
+The OpenStack Infrastructure team, and the CI team before it,
+traditionally existed to care for the continuous integration and
+collaboration infrastructure on which the OpenStack community
+relies. With the rise of the `OpenDev Collaboratory
+`_ as a distinct effort outside of (but still
+primarily in service of) OpenStack, the majority of the team's
+former systems administration activities were no longer occurring
+under the authority of OpenStack. Most of the software and
+configuration management repositories previously in the care of the
+Infra team were also no longer official OpenStack deliverables, as
+they became part of OpenDev as well (and their biggest development
+effort, `Zuul+Nodepool `_, was already spun
+out as an independent Open Infrastructure Project even earlier
+still).
+
+With these responsibilities moved elsewhere, the existence of a
+formal team was less of a necessity. What remained was a need to
+support OpenStack's project-specific testing and collaboration
+tooling and services, primarily job configuration and other things
+which shouldn't currently be generalized into components of the
+OpenDev Collaboratory. To this end, a Testing and Collaboration
+Tools (TaCT) SIG was created to serve the role previously occupied
+by the OpenStack Infrastructure team.
+
+Naming
+------
+
+The choice to rename was, in large part, because the term
+"infrastructure" perpetually confused newcomers to the community,
+and the SIG's formation was an opportunity to use something less
+overloaded.
diff --git a/sigs.yaml b/sigs.yaml
index 3385742..c2de4f1 100644
--- a/sigs.yaml
+++ b/sigs.yaml
@@ -345,5 +345,5 @@ Testing and Collaboration Tools:
The Testing and Collaboration Tools (TaCT) SIG maintains, in cooperation
with the OpenDev project, the tooling and infrastructure needed to support
the development process and testing of the OpenStack project.
- url: https://wiki.openstack.org/wiki/Documentation
+ url: tact-sig.html
status: active