Chapter 1. An introduction of microbial genomic islands for evolutionary adaptation and pathogenicity -- Chapter 2. Computation tools for prediction and analysis of genomic islands -- Chapter 3. An overview of genomic islands' main features and computational prediction: the CMNR group of bacteria as a case study -- Chapter 4. Microbial genomic island discovery, visualization and analysis -- Chapter 5. Genomic islands in bacterial genome evolution and speciation -- Chapter 6. Genomic islands in the gut microbiome: current knowledge and the application in the probiotics field -- Chapter 7. Genomic islands in nutritional fitness and adaptation -- Chapter 8. Genomic islands involved in iron uptake -- Chapter 9. Genomic islands in uropathogeneic E. coli -- Chapter 10. Genomic islands in Helicobacter species -- Chapter 11. Genomic islands in Staphylococcus -- Chapter 12. Genomic islands in Pseudomonas species -- Chapter 13. Genomic islands in Klebsiella pneumonia -- Chapter 14. Molecular Insights intoGenomic Islands and Evolution of Vibrio cholerae -- Chapter 15. Genomic islands in marine bacteria -- Chapter 16. Challenges in Eventing Horizontal Gene Transfer -- chapter 17. Artificial Intelligence and machine learning for prediction and analysis of genomic islands.