As a push to relieve some pain from release builds (and, indirectly, main builds) I've opened the following PRs to release branches which are not using "-Svc-" pool providers.

let builds=
BuildTimelineRecord
| where OrganizationName == "dnceng"
| where Type == "Job"
| where ProjectId == "9ee6d478-d288-47f7-aacc-f6e6d082ae6d"
| where WorkerName startswith "NetCore1ESPool-Public"
| distinct BuildId;
Build 
| where OrganizationName == "dnceng"
| where FinishTime > ago(7d)
| where BuildId  in (builds)
| where SourceBranch contains "release"
| summarize arg_max(BuildId,*) by RepositoryId

PRs

Interactive:

• release/jupyter: Update all usages of NetCore* Pool providers to -Svc version interactive#2305

Arcade:

• 6.0: Use svc pool provider in all release/6.0 builds #10572 (pending)
• 3.x: Not needed

AspNetCore:

• release/7.0-rc1 : Move to -Svc pool provider (7.0 RC1) aspnetcore#43528 (Closed in favor of Move to -Svc pool provider (release/7.0) aspnetcore#43529)
• release/7.0 : Move to -Svc pool provider (release/7.0) aspnetcore#43529 (merged)

EFCore:

• release/7.0 : Move to -Svc pool provider in release branches efcore#28873
• release/7.0-rc1 : Move to -Svc pool provider in release branches (7.0 RC1) efcore#28874

dotnet/fsharp :

• release/dev17.4 : Use svc pool to build release/dev17.4 fsharp#13779

Installer:

• release/7.0.1xx-rc1 : not needed
• release/7.0.1xx : Use -svc pool provider in release 7.0.1xx branches installer#14392
• release/6.0.4xx : not needed
• release/6.0.1xx : not needed

dotnet/llvm-project

• dotnet/release/7.0 : Move to -Svc pool provider in release branches llvm-project#255

dotnet/roslyn :

• release/dev17.4 : Move to -Svc pool provider in release branches roslyn#63584
• release/dev17.3 : Move to -Svc pool provider in release branches roslyn#63585
• release/dev17.0-vs-deps : Already done

dotnet/runtime:

• 7.0-rc1: [release/7.0-rc1] Move all build pools to -Svc equivalents runtime#74521

dotnet/sdk

• release/7.0.1xx-rc1 : Move non-eng-common builds to NetCore1ESPool-Svc-* version sdk#27425
• release/7.0.1xx : Move 7.0.1xx (sans eng/common) to -Svc build pools sdk#27426
• release/6.0.4xx : not needed
• release/6.0.3xx : not needed
• release/6.0.1xx : not needed

dotnet/templating

• release/7.0.1xx-rc1 : Move to -Svc pool provider in release branches templating#5154
• release/7.0.1xx : Move to -Svc pool provider in release branches templating#5155
• release/6.0.4xx : already done
• release/6.0.3xx : already done

dotnet/windowsdesktop

• release/7.0-preview7 : Move to -Svc pool provider in release branches windowsdesktop#3123

dotnet/winforms

• release/7.0 : Move to -Svc pool provider in release branches winforms#7659
• release/7.0-rc1 : Move to -Svc pool provider in release branch (7.0-rc1) winforms#7660

dotnet/wpf:

• release/7.0 : Use svc pool for release/7.0 wpf#6947
• release/7.0-rc1 : Move to -Svc pool provider in release branches (7.0 RC1) wpf#6948

Release Note Description

Internal alerting changes - Does not need release notes