PacBio sequencing, a third-generation sequencing technology, offers longer read lengths than second-generation sequencing (SGS), making it suitable for genome, transcriptome, and epigenetics research. It enables highly contiguous de novo assemblies, structural variation (SV) characterization, and detection of gene isoforms and methylation. PacBio's long reads can traverse repetitive regions and detect mutations associated with diseases. Hybrid sequencing strategies combine PacBio long reads with SGS short reads, improving accuracy and affordability. PacBio sequencing provides kinetic information for base modification detection, such as methylation. While PacBio has longer reads and higher accuracy, it has lower throughput and higher error rates. Hybrid sequencing is more cost-effective for small labs. PacBio sequencing has been applied to de novo genome assembly, resolving complex genomes like Clostridium autoethanogenum and human genomes. It also aids in transcriptome research, identifying gene isoforms and novel genes. PacBio's long reads help in resolving repetitive regions and detecting structural variations. In epigenetics, PacBio detects DNA modifications like m6A and m4C. It has been used to study bacterial and human genomes, revealing epigenetic motifs and methylation patterns. PacBio sequencing also helps in detecting intercellular heterogeneity in DNA modifications. Despite its advantages, PacBio sequencing faces competition from other third-generation technologies like Oxford Nanopore. However, improvements in throughput and cost are expected, making PacBio more accessible for large-scale genomic studies. Hybrid sequencing is becoming a popular approach to leverage the strengths of both PacBio and SGS technologies.PacBio sequencing, a third-generation sequencing technology, offers longer read lengths than second-generation sequencing (SGS), making it suitable for genome, transcriptome, and epigenetics research. It enables highly contiguous de novo assemblies, structural variation (SV) characterization, and detection of gene isoforms and methylation. PacBio's long reads can traverse repetitive regions and detect mutations associated with diseases. Hybrid sequencing strategies combine PacBio long reads with SGS short reads, improving accuracy and affordability. PacBio sequencing provides kinetic information for base modification detection, such as methylation. While PacBio has longer reads and higher accuracy, it has lower throughput and higher error rates. Hybrid sequencing is more cost-effective for small labs. PacBio sequencing has been applied to de novo genome assembly, resolving complex genomes like Clostridium autoethanogenum and human genomes. It also aids in transcriptome research, identifying gene isoforms and novel genes. PacBio's long reads help in resolving repetitive regions and detecting structural variations. In epigenetics, PacBio detects DNA modifications like m6A and m4C. It has been used to study bacterial and human genomes, revealing epigenetic motifs and methylation patterns. PacBio sequencing also helps in detecting intercellular heterogeneity in DNA modifications. Despite its advantages, PacBio sequencing faces competition from other third-generation technologies like Oxford Nanopore. However, improvements in throughput and cost are expected, making PacBio more accessible for large-scale genomic studies. Hybrid sequencing is becoming a popular approach to leverage the strengths of both PacBio and SGS technologies.