2.5.1.3. Section 3: Capability Discussion. Same as the regular CDD with the exception of the following:

2.5.1.3.1. Provide a table that briefly describes the contribution this IS-CDD makes to the fulfillment of CR described in the applicable ICDs or analysis of the capability gaps as illustrated in Figure B-15.

For reference or comparison, below is what the JCIDS Manual says for the CDD 2021 itself:

2.5.3.2.1 Provide a table that depicts the contribution this CDD makes to the fulfillment of CRs (Task/Condition/Standard) and closing of capability gaps described in the applicable ICDs, as illustrated in Figure B-7

2.5.3.2.2. Sponsors shall provide traceability between each CR and ensure that the proposed solution is addressing the performance attribute (KPP, KSA, or APA) specified in Section 5 of the CDD.