Team Topologies on splitting teams

Keep “Cognitive Load” down. Here are some heuristics:

• If a domain is too large for a team, instead of splitting responsibilities of a single domain to multiple teams, first split the domain into subdomains and then assign each new subdomain to a single team.⊕ (Skelton and Pais 2019, chap. 3)
  
  

• a single team … should be able to accommodate two to three ‘simple’ domains.⊕ (Skelton and Pais 2019, chap. 3)
  
  

• a team responsible for a complex domain should not have any more domains assigned to them–not even a simple one.⊕ (Skelton and Pais 2019, chap. 3)
  
  

• avoid a single team responsible for two complicated domains.⊕ (Skelton and Pais 2019, chap. 3)